Friday, January 8, 2010

Is it useful to think of a point as an object with only an exterior?

I tend to think of a point as a point. No more, no less.





I think of infinite space as ';nothing'; or as ';emptiness'; where energy and matter moving through the emptiness can be tested, measured, and proven, but the emptiness itself cannot be measured, tested, proven, or disproven.Is it useful to think of a point as an object with only an exterior?
That's up to you....whatever suits you best to be able to imagine these things.
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  • How do we calculate the total torque acting on an object?

    How do we calculate the total torque acting on an object?How do we calculate the total torque acting on an object?
    We integrate the force incident on the object along its radius of rotation.

    How large of an object can an average human swallow without choking? Any guesses?

    How large of an object can an average human swallow without choking?How large of an object can an average human swallow without choking? Any guesses?
    not very big i think i think like a jawbreaker would be the largestHow large of an object can an average human swallow without choking? Any guesses?
    If it's lubricated, pretty big. I'd say on average a ball the size of a quarter. But if it's really dry not very big, because it won't go down. I once tried to swallow two calcium pills at the same time and the almost took me out the game cause they wouldn't go down, too dry, even with a bunch of water.
    Well, depends on the object. If it's soft, like a twinkie, you could probably swallow that whole. But a child swallowed a small, plastic car, and that was remarkable he manage to swallow it. Depends on the substance, really.
    Probably nothing that is longer wider or taller than 3 in.
    maybe like a golf ball size? ir ping pong ball..i think that a little smaller
    Bottle cap that's about it. lol idk...
    ouch. probably maybe a little ball.

    Can an abstract class constructor be used t ocreate an object of the abstract class?

    Can an abstract class constructor be used t ocreate an object of the abstract class?Can an abstract class constructor be used t ocreate an object of the abstract class?
    You can not create an instance of an abstract class. You must create a descendant that overrides any virtual functions in the abstract class. (In Java those would be abstract functions, but the concept still holds.)

    How can i fix object doesn't support this property or method?

    I get this error on ioffer tring to make a payment can anyone help in simple terms?


    I already ti the reg clean and all the things Microsift said to do.





    Thanks!





    OwlHow can i fix object doesn't support this property or method?
    In English, please.

    How do I calculate the angular speed of a spinning object.?

    A high-speed sander has a disk 4.10 cm in radius that rotates about its axis at a constant rate of 1280 revolutions per minute. Convert final answer into radians per secHow do I calculate the angular speed of a spinning object.?
    1280 rev per min


    =1280/60 rev per sec


    since i rev=2pi rad


    so total rad/sec=1280/60*2pi


    =134.041rad/secHow do I calculate the angular speed of a spinning object.?
    Angular velocity is just rpm divided by the radians in a circle... The ';speed'; of the disc is a different matter that is related to rpm and the circumference of the arc over which it operates.





    The number of radians in a circle is about 360/57, or about 6. So, rpm is the number of 360 degree circles an object travels per minite. From here on, it is just simple math. Hope I helped...





    Check the link...
    Any circle, in radians, is 2pi. This rotates at 1280 rev/min.





    1280 rev/min * min/60 sec = 21-1/3 rev/sec





    21-1/3 rev/sec * 2pi rad/rev = (42-2/3)pi rad/sec





    You don't need to know the radius of the disk unless you want to calculate the tangential velocity, which varies with the radius. It's just thrown in to fool you.





    By the way, what temperature is it in the room in which the disk is rotating? :D
    1 revolution is 2蟺 radians.


    1280 revolutions is 1280*2蟺 radians = 2560蟺 radians





    Sander does 2560蟺 radians in 60 seconds so in 1 second it does





    2560蟺/60 radians/second


    = 134.041 rad/s

    What can I get for my friend, money is no object?

    I really want to get him something. He has done so much for me and he doesnt even want repayment, I told him I was going to get him something and he got annoyed. I need to get him something that says thank you for what you have done, I appreciate it!


    Do you have any ideas. Please, a great idea would be much appreciated. I really need to get him something, I owe him my life.What can I get for my friend, money is no object?
    What kinds of things does he like?





    Sports?


    Books?


    Movies?


    etc...What can I get for my friend, money is no object?
    I think that anything that comes straight from the heart would be very much appreciated. Something like a scrapbook of your memories, or even just a really heartfelt letter.
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  • Using GIMP, how can I lighten/darken an object in a photo and lighten/darken another object in the same photo?

    I have a photo with two objects in it. One object I'd like to darken and the other I'd like to lighten. Can this be done using GIMP?Using GIMP, how can I lighten/darken an object in a photo and lighten/darken another object in the same photo?
    Yes


    The Dodge/Burn tool allows selective lightening or darkening of areas.

    Would you object to being used in research without giving permission?

    For example, say someone used your (along with the other answerers) responses here to gage the public's view on a topic?Would you object to being used in research without giving permission?
    Yes, the point is that you have to be asked, its the law.





    As for the fact that we may not know what the research is, this might be essential to producing proper results, so it would have to be up to the discretion of the individual.Would you object to being used in research without giving permission?
    You can research me as much as you want,You wont find anything because.I tell lies.Ha,Ha,I am mad i tell you mad.
    Yes, I dont like it, but I saw something on the tv about that kind of thing happening all the time now on sites like u tube etc. so it probally is happening to us right now. No, not knowing the exact nature is not good enough either..I would respond if I got paid, its market research....Your last question is the same as your first one. You do have an awful lot of questions about this????
    yes, and if it did occur you must be well insured?
    yes.
    I wouldn't mind to much. Whether the answers people give satisfy an individual mind or a group mind doesn't really make a difference. The only time it would bother me is if someone I knew decided to stalk me on the net - the loss of anonymity would damage my privacy and I'd feel abused.
    Yes I would...

    What's the name of a three-dimensional object with 48 equal sides, all sides being equilateral triangles?

    I have this puzzle, it's the object described with parts that lock together, if anyone knows how to take it apart, that'd be nice, too. I can't remember what it's called...


    It's made of wood.What's the name of a three-dimensional object with 48 equal sides, all sides being equilateral triangles?
    a polygon w/ 48 sides is called a ';tetracontakai octagon';





    http://www.math.com/tables/geometry/poly鈥?/a>





    i don't know what your puzzle is called... cheersWhat's the name of a three-dimensional object with 48 equal sides, all sides being equilateral triangles?
    The greatest # of sides your equilateral triangle solid can have is 20. It's called a regular icosahedron.


    Reason: any six such triangles will define a plane and therefore cease to be individual faces. Ergo, at any corner there can be a maximum of 5 triangles joining together. This forms an icosahedron.





    See the reference below

    Speed of object with springs and equilibrium?

    A 0.390-kg mass is attached to a spring with a force constant of 25.9 N/m and released from rest a distance of 3.20 cm from the equilibrium position of the spring. Calculate the speed of the mass when it is halfway to the equilibrium position.Speed of object with springs and equilibrium?
    Total energy TE = 1/2 kdX^2; where k = 25.9 N/m and dX = .032 m.





    From the conservation of energy TE = 1/2 kdX^2 = pe + ke = 1/2 k (dX/2)^2 + 1/2 mv^2 = TE; where m = .39 kg and v = ? the velocity you are looking for.





    Therefore 1/2 k dX^2 (1 - 1/4) = 1/2 mv^2 and v^2 = 3/4 k dX^2/m and v = sqrt(3/4 k dX^2/m) = sqrt( 3/4 25.9*(.032)^2/.39) = ? You can do the math.





    The physics is this. The system started with only the PE of the spring when at dX = .032. But as the spring/mass contracted, some of the PE converted into ke and some left over pe because the spring was still a bit strecthed (dX/2).

    How to reduce the sliding friction of an object on a hard surface?

    i remember this from last year, um.. lubrication helps, also, if you tilt the hard surface at an angle it becomes a wedge or something, and less friction equals less work but more distance, something like thatHow to reduce the sliding friction of an object on a hard surface?
    Place something smooth under the object, a piece of linen like a sheet or a pair of socks.How to reduce the sliding friction of an object on a hard surface?
    Put wax on the surface to let it slide better.
    Put some kind of lubrication between the object and the hard surface.
    Different methods can be used to reduce the amount of friction between the surfaces of the objects in contact. One way to reduce friction is to apply a lubricant to the surfaces, another is to use casters, rollers, or ball bearings between the surfaces, and another is to smooth the surfaces of the objects in contact.
    take it off
    Change the surface. Like if you have a polished dining room table and can slide say a salt shaker across it. If you add a table cloth, increased resistance would cause less slide.
    you can polish the surface,lubricate it,or use something like ball bearings if possible.

    If an object at rest, stays at rest, then how was the big bang possible?

    Keep in mind that the cycle theory of the universe epanding, and then contracting, is pretty much obsolete, though even if that were the case it would violate the law of perpetual motion. What was the acting force that caused the big bang?If an object at rest, stays at rest, then how was the big bang possible?
    That is the one gigantic question that nobody know the answer to. There is a theory that there are many universes - and our big bang was caused when 2 of these other universes bumped into each other.


    You are correct about the perpetual motion laws being violated. It is now believed that the universe, or universes, begin with a big bang and end in a big freeze, whereas the universe is expanding and cooling and it does so forever, ending with the temperature at absolute zero at time = infinity. (At time = zero the universe was 'as hot as anything ever was'.)If an object at rest, stays at rest, then how was the big bang possible?
    Hmm. I'm wondering if the state of ';rest'; ever exists except for really tired scientists. Rest is an experiential phenomenon of feeling more than anything. I believe Newton was explaining motion of objects, but we know that even when we sit still, our hearts beat, synapses fire in our brains, and our hair and nails grows. So what exactly is rest? Seems in this universe, there is potential energy within even the most inert looking matter.


    I must, for personal theological reasons, believe that even if there were a ';Big Bang';, some form of the universe must have preceded it.


    Also, as humans, we like to believe there is an absolute beginning and an absolute end to everything.


    Birth-Death, etc.


    And as opposed as religions can be to scientific curiosity,


    some may never leave the bubble of fixed-finite belief in absolutes. These fixed objects never stay that way. Remember the stars were perceived as the most constant things in the sky for thousands of years. Now we know they move a lot.





    We must always allow for the invariably confounding existence of the infinite and that we're always in motion, never at rest. (God Laughs)


    So enjoy that cup of coffee,


    the answer is a paradox of flawed human perception.
    To address the acting force that caused the big bang, I would have to ask you to address what force created the matter that was acted upon by the force that was subsequently conceptualized as the ';big bang';.
    perhaps something was not at rest - i also do not believe in it
    a universe filled with antiparticles crashes into a universe packed with particles, this combines the two universes and expands because antiparticles and particles destroy each other at contact, but enough particles were left over, which is the stars and planets and anything mande of elements that you see. ---- The End ----
    First, the Big Bang theory is crap. Second (addressing your question), if nothing else existed besides the single mass, then it isn't possible to say with any certainty that mass was at rest. In order to show movement there needs to be at least two objects to compare each other to.
    Heat.
    ......my brain hurts.....too many big words.....too much thinking.....
    Remember that Newton came up with his Laws of Motion 300 years before Relativity was a glimmer in Einstein's eye. Don't compare the two like they're on equal footing.





    The expansion (or contraction) of spacetime on a universal scale is a far more powerful force than Newton's elementary classical laws of motion. With current technology we can't speculate about what ';caused'; the big bang, since we would need to make observations outside of our spacetime, which is not possible.





    My god, why are people answering when they have no clue whatsoever?
    the object at rest stuff is Newtonian physics. All went by the wayside with Einstein's discovery of the exchangeability of matter and energy.
    I don't believe in the big bang theory. I'm sorry
    Zero point energy
    it probably never happened like that
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  • Could an object ever travel through space at the speed of light or faster?

    What is the most powerful force in the universe?...and might harnessing it be the key to this puzzle?Could an object ever travel through space at the speed of light or faster?
    only things with no mass can travel at the speed of light.





    the most powerful known force is the strong force. even if you could harness this force to do work, it would take an infinite amount of energy to make something with mass to go at the speed of light.

    Does a change in the speed of an object always produce a change in its velocity?

    Does a change in the speed of an object always produce a change in its velocity?


    Does a change in the velocity of an object always produce a change in its speed? Explain both.Does a change in the speed of an object always produce a change in its velocity?
    Not necessarily. Speed could be constant and velocity change (by a change in direction of the moving object).





    Not necessarily, either. A change in velocity of an object would bring about probably the same absolute magnitude of the velocity, which is the speed.Does a change in the speed of an object always produce a change in its velocity?
    Speed refers to motion but not direction. Velocity is speed in a specified direction. So if the speed changes the velocity changes too, but velocity can change while speed remains the same. For example a thing moving in a circle has a constant speed but velocity is always changing.
    Velocity is speed, but with a direction. So a change in speed will change velocity cause velocity is speed but with a direction

    Does an object with a higher temperature always have more thermal energy?

    Why or why not?Does an object with a higher temperature always have more thermal energy?
    No, you can have a large tank of water at 10潞C above ambient and it would have more thermal energy than a small piece of iron at 1000潞C





    Basically, thermal energy is the specific heat of an object x it's mass x the temperature difference. So you can increase the thermal energy by making the object larger, even while you lower the temperature.











    .

    How do take a photo of a moving object ?

    I want to take pictures of my dog running outside, but they come out blurry.


    What settings should I change ?How do take a photo of a moving object ?
    Assuming you have a Point and Shoot camera.


    Set the setting to Sports Mode.


    Follow your dog, click the shoot button half way to get it focus, and then shoot.


    Most Point and Shoot won't come out good for fast moving photos.


    You need a DSLR camera like the pros.How do take a photo of a moving object ?
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    the lens is broken or dusty.


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    Buy a new one is the best way lol.





    xxx


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    is the lens dented at all ?


    i had this problem.


    but it was like, extreme blurr.


    you probably need a new camera.





    try olympus.


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    maybe youre moving your hand too much when you take the picture and its causing it to be blurry





    also, you might have finger prints on your lens, take a cloth like the one to clean glasses and clean the lens with that


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    instead of buying the new ones connect it to your computer and then set all the camera settings higher than usual but if that does not work wipe the lens and run a initial setup or you can plug it into your computer and then format it


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    See if that's explained in the handbook. Usually to set the focus, you half-push the shutter while aiming at your subject, release it and then take the picture. There may be an Autofocus setting or an averaging setting. Your camera may be set on macro, or closeup. If none of this helps the camera shop will help you get it repaired or replaced.


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    Call Casio if it's under warranty.


    Set it to automatic mode and see if it's still blurry.


    Clean the lens with lens cleaner like a microfiber or similar.


    Even Q-tips is fine.





    If they all don't work, buy another one and return this one to Best Buy.
    Fastest shutter speed.





    Since you did not tell us which camera, we can't tell you how your camera might control that... but it will be in your camera's manual.
    dont they have special camera for that?


    ahaha

    How low can you get Man utd fans injuring a Man city player with an object thrown?

    Its disgusting tevez shows his appreciation for the fans and someone throws n object that hurts Man city player Garrido. Absolutely no excuses and will the FA finally take action against these thug fans.





    What is your opinion?How low can you get Man utd fans injuring a Man city player with an object thrown?
    lol..... who are you? the morals police? there is always someone having a dig at your players aint there? lol





    Welcome to the world of top of the league rivalry





    its not enough to hate teams, you gotta hate individuals too! lolHow low can you get Man utd fans injuring a Man city player with an object thrown?
    The FA should look into it along with Bellamy hitting the fan who ran on the pitch. The latter was wrong, but should Bellamy have walked over to brush him across the cheek considering the fan was already being restrained? Weird that the incident somehow escapes your view.





    Also will City investigate the fans that were singing the ';Tevez, he's a blue and hates Munich'; song? If I remember very well, they were warning United fans weeks before the match to desist against the wrong racist chants directed at Adebayor.
    dont be silly..its man utd.the fa will turn a blind eye to it


    total disgrace
    The FA won't take action - you know they are hopeless.
    No the FA will look the other way...





    BELLAMYYYYYYYYYYYYYYYYYYYYYY!!!!!!!!!
    comon... again they gave Utd more than the extra time intended for them to score... they will take no action against anything man utd.. lol
    what was thrown a pizza or prawn sandwich





    i did not see anything but if they catch that supporter send him to jail

    In the absence of light, do objects cool more quickly depending on the object's color?

    If you have two objects, with the same mass and same material, at the same temperature above ambient, one black and one white, which would cool quickest with the absence of light?In the absence of light, do objects cool more quickly depending on the object's color?
    Both would cool at the same rate.





    Different colored objects absorb light differently. Some absorb more than others but in this case you have to have light to absorb to keep it at the same temperature. Since there is no light they will cool down at the same rate.In the absence of light, do objects cool more quickly depending on the object's color?
    They would cool at the same rate.





    Their color would only affect their light absorption, in the absent of light they technically don't even have a color since its the reflection of light that creates color.
    the answer would be related to the theory of Black body radiation good radiators of energy also good absorbers of energy
    i think the white one would, because black holds onto heat longer, but i'm not 100% sure
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  • How can the volume of an irregular unknown object be measured?

    Your answer:


    using a ruler to measure length, width, and depth


    measuring the volume of water displaced by the object


    obtaining the mass of the object


    measure the radius and use V=pr2How can the volume of an irregular unknown object be measured?
    measuring the volume of water displaced by the object





    1 is out cause it irregular


    3 is out cause even with mass without the density you cannot get volume


    4 is out because its not a sphereHow can the volume of an irregular unknown object be measured?
    Measuring the volume of water it displaces.

    What changes in motion are possible when an object is accelerating?

    In addition to V changing, position can change as well because


    x = 鈭埆a dtWhat changes in motion are possible when an object is accelerating?
    Speed, both increasing and decreasing, and direction. Acceleration is just change in velocity, and velocity is made up of speed and direction.

    Would an object have more momentum on the moon or on the earth?

    Which do you think has more momentum, a bowling ball moving at 1 m/s on Earth or a bowling ball moving at 1 m/s on the Moon?Would an object have more momentum on the moon or on the earth?
    why would you think they might have different momentums?Would an object have more momentum on the moon or on the earth?
    same

    How do you change the color of an object in a photo on Picasa2?

    Picasa2 won't let me change the color of my skin,eyes,hair,etc. and of course it said it would. and how are you able to do that without having to buy another program? If you know a free program i can download that can do that i would really really aprecitate it. ThanksHow do you change the color of an object in a photo on Picasa2?
    I think that you misunderstood ';adjust color'; as ';alter color.'; I use Picasa all the time... for overall organization and light touch-ups. I use Photoshop CS3 for anything heavy, such as smoothing skin, changing backgrounds, and seriously altering and improving color. You can't do any of these things in Picasa (but Picasa does have its uses).





    I know that you can't afford Photoshop, but there is a free application called the GIMP (just Google for that) that does a good deal of what Photoshop does.How do you change the color of an object in a photo on Picasa2?
    Picasa of google ,


    http://picasa.google.com/


    picasa is more for basic adjusting of photos, not really for adding advanced effects, so with that you could make copy of colored image into sepia or b%26amp;w, then open both in paint, then select color item with lasso tool transparency on, copy, then paste over b%26amp;w,


    http://www.flickr.com/photos/bo_fra/7090…





    ~so picasa is still good for viewing and organized images, but you'll want better program to add effects like color on b%26amp;w, ☺


    Photofiltre ~to select, invert and desaturate,


    http://photofiltre.free.fr/frames_en.htm


    http://www.flickr.com/photos/bo_fra/1043…





    Gimp ~to add layers desaturate, erase , recolor, mask,


    http://gimp-win.sourceforge.net/stable.h…


    http://www.flickr.com/photos/bo_fra/4593…





    Photoscape : to add spot with color


    http://www.photoscape.org/ps/main/index.…


    http://www.flickr.com/photos/bo_fra/1107…


    ..

    How much Potential Energy does a 25 kilogram object have if it is on a shelf 3 meters above the floor?

    Short answer if you can; 9th grade science.How much Potential Energy does a 25 kilogram object have if it is on a shelf 3 meters above the floor?
    P.E=mgh where m=25kg, g=10m/s2 (I assume that g=10, but in some cases, it equal to 9.8), h=3m


    P.E=25*10*3


    P.E=750 J

    How do I calculate VAT for a paricular object?

    I am a student of class 9th.I have to do a Maths project.So,can anyone tell me how to calculate VAT for an object.if I know the price at which the manufacturer is selling to the distributor and the distributor to the retailer and finally to the consumer.How do I calculate VAT for a paricular object?
    search for the equation on the internetHow do I calculate VAT for a paricular object?
    Presumably you are British or you would have said Math.


    With VAT at 17.5 %. the cost to the consumer is 117.5%, so to find the retailer's cost, you have to divide the retail price by 117.5 and multiply by 100. I don't know what else you have in the way of figures, but the same argument applies from the distributor to the retailer and again from manufacturer to distributor.


    Work backward from each stage.
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  • What is the best way to write efficient Object Oriented JavaScript?

    I am trying to write a custom JavaScript framework. For that I need to categorize the classes into namespaces etc. So I need the most efficient way to write the classes, like wether or not to use prototype. Which notation shall be used the JSON or the other etc. Keeping in mind that the framework is cross browserWhat is the best way to write efficient Object Oriented JavaScript?
    wooow

    How do I find the height of an object w/ just the length and width given?

    A block of wood has a volume of 137mm^3. If the block measures 9.3mm by 5.1mm, what is the height of the block?How do I find the height of an object w/ just the length and width given?
    V=lwh


    137=(9.5)(5.1)h


    137/48.45=48.45h/48.45


    h=5.83 mm (about)How do I find the height of an object w/ just the length and width given?
    length x width x height = volume, right?





    So you have





    length (9.3) x width (5.1) x X ( cause youdon't know height) = 137 mm^3.





    just solve for x. Divide both sides by lenght. Then divide both sides by width. What you have left is x (or height)
    Volume= L x W x H


    (divide each side by L x W to isolate H)


    H=Volume/L x W





    H=137/9.3 x 5.1


    H=137/47.43


    H=2.88846 mm (approx.)





    Now, to check:


    Volume= L x W x H


    Volume= 9.3 x 5.1 x 2.8


    Volume= 47.43 x 2.88846


    Volume= 137 mm^3 (approx.)
    volume = length x width x height





    137 = (9.3)(5.1)h


    137 = 47.43 h


    h = 137/47.43


    h = 2.89mm



    well if it is a perfect square than you probrbly know how but otherwise i dont have a clue how to do that

    Theoretically speaking, is it possible to cut an object in half infinite times?

    this question popped in my head today and at first i thought of it in a mathematical way and the answer was ';yes';, but if u think about it in a physics way, i dont think its possible. what do u think?Theoretically speaking, is it possible to cut an object in half infinite times?
    If you take a ordinary paper weighing about 1 gram, and start cutting it in half, you will reach the size of an atom by the time you cut the paper in half about 80 times. After that you can not go very much farther. I think dividing 100 times, itself is beyond the limits of matter (as we understand today).


    So the answer is NO.Theoretically speaking, is it possible to cut an object in half infinite times?
    based on the current physics models no. if it an actual physical specimen, there are limits on minimum sizes based on the size of the smallest known particles. I guess we would be talking about muons or neutrinos. when you get down to these single charged particles, you can't split any further.
    sure. even after you get to the atoms, you can still cut a proton in half then cut that in half etc. i don't see why not.

    What is considered bad luck or an object that is bad luck to philippines?

    I have a friend who is Philippine and she considers NEARLY every OBJECT bad luck. Does anyone know what OBJECTS really are bad luck or HAUNTING to Philippines so I can get her to chill out. ThanksWhat is considered bad luck or an object that is bad luck to philippines?
    Philippine beliefs and superstition have grown in number throughout the various regions and provinces in the country. These beliefs have come from the different saying and superstitions of our ancestors that aim to prevent danger from happening or to make a person refrain from doing something in particular. Click on the below for hundreds more. Here are just a few鈥?br>

    Sleeping after taking a bath during daytime or at night will result in blindness.


    A lingering black butterfly is a sign that one of your relatives just died.


    A falling spider that lands on you is an omen that someone close to you will die.


    Let a dog lick your wounds, and the wounds will be healed.


    Sleeping with wet hair makes one crazy


    Taking a bath on New Year鈥檚 Day and/or Good Friday will cause one to get sick.


    If the family is eating and a member arrives, he is not permitted to join the others in the meal, for if this rule is violated and a member of the household becomes ill, the others may become ill too.


    Brides shouldn鈥檛 try on their wedding dress before the wedding day or the wedding will not push through.


    Knives and other sharp and pointed objects are said to be a bad choice for wedding gifts for this will lead to a broken marriage.


    Giving an arinola (chamberpot) as wedding gift is believed to bring good luck to newlyweds.What is considered bad luck or an object that is bad luck to philippines?
    take it from a filipino. There are no items I've ever herd of that can bring bad luck to the Philippines, and I was born there too.

    An object is thrown vertically upward with a certain initial velocity in a world where the acceleration due ?

    to gravity is 19.6 m/s^2. The height to which it rises is..............that to which the object would rise if thrown upward with the same initial velocity on the Earth. Neglect friction.An object is thrown vertically upward with a certain initial velocity in a world where the acceleration due ?
    let's determine the height, h, to which an object would rise if thrown vertically upward with an initial velocity vi, in a world where the acceleration due to gravity is -g (- stands for down)





    h = (vf虏 - vi虏)/(2a)





    h = (0 - vi虏)/(-2g)





    h = vi虏/(2g)





    clearly, if g is doubled, then h would become halved





    if you want to check:


    h1 = vi虏/(2g)


    h2 = vi虏/(2(2g))


    h2 = vi虏/(4g)





    h2/h1 = [vi虏/(4g)] / [vi虏/(2g)]


    h2/h1 = 1/2





    half

    How do I add color to one object in a black and white picture?

    I don't have Photoshop...but is there any other way to do it?


    I.E. photobucket, paint, etc.How do I add color to one object in a black and white picture?
    this question is aske and answered at leat 20 times a day here.


    just do a search and you will get lots of answers.How do I add color to one object in a black and white picture?
    One basic technique is to start with a color picture and then create a selection around the object to stay colored. Then invert the selection and remove the color from this inverse selection.





    This is a tutorial with example for Photoshop


    http://digital-photography.suite101.com/鈥?/a>





    the Gimp is free editing software similar to Photoshop that uses the same basic method





    http://digital-photography.suite101.com/鈥?/a>
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  • How to make a pic black and white except for a necklace or other object?

    I have Paint Shop Pro 7 and I've seen people do fun things like take a colored pic of them and turn it all black and white except for one thing like make their necklace red or their eyes green. I really want to know how to do that, if anyone can tell me how? Thanks for the help!How to make a pic black and white except for a necklace or other object?
    use photoshop, and if you dont have it... email me the pic, and ill do it for you. Check my profile for contact info or message me at the link belowHow to make a pic black and white except for a necklace or other object?
    Here are a few 'B%26amp;W plus Color' tutorials to try out (first two written for PSP 7, and the last one in PSP X/XI, but adaptable to PSP 7)





    http://www.bearzcave.com/colorisedtutori鈥?/a>


    http://www.alicesnook.com/variations/col鈥?/a>


    http://www.srsteele.com/Retouching/bw_pl鈥?/a>





    Hope this helps :)
    Download the Gimp it is free and will do amazing things once you start to learn it

    What are the four ways that an object can give off light?

    How does temperature affect the amount and type of light emitted?What are the four ways that an object can give off light?
    Light bulbs


    and


    some creatures under the sea.





    fire


    ,


    radiationWhat are the four ways that an object can give off light?
    Heating to incandescence


    Bioluminesence by chemical reaction


    Electromagnetic stimulation (laser or maser, LED, plasma)


    Fluorescence (chemicals in rocks or phosphors in lamp tubes re-emitting light at different wavelengths, but is this different from above?)


    Cherenkov radiation luminance





    Not sure of the second part, unless refering to continuous spectrum emission from black body, shift from the red to the blue as temp increases.

    Which quantities are the same when one object passes another during that exact moment -- velocity or position?

    You're driving down the highway, and another car moving in the same direction passes you. At the moment that care passes you, which motion quantity is the same for both cars -- position, velocity, or both?Which quantities are the same when one object passes another during that exact moment -- velocity or position?
    at that instant - the positions are the same by definition.





    but the velocities cannot be the same. while direction is the same for both cars, the two speeds are not. otherwise the other car could not have caught and passed you.





    as velocity is a vector (speed + direction), then the velocities cannot be the same at this instant, because the two speeds are different...





    cheers

    What object do i need for the dadnapped game trip trapped?

    i got the broom,vacuum,Floss,And Bungee cord what else do i need i tried every thing and now the riddles don't make sinceWhat object do i need for the dadnapped game trip trapped?
    You need the dog bowl


    it is at the place where


    the 2 homeless guys are





    it worked for me

    What object represents your presonality?

    and why?





    we did this in english class


    eg. i am like marsh mellow im soft and mushy ect.


    or im like a zit, sometimes im there sometimes im not, i can be annoying and embarrassing at times...





    just curious as to what people have to say. What object represents your presonality?
    A septic tank, I'm full of crap.What object represents your presonality?
    my conversation, my character, and my ability of being outspoken
    Lotus Blossom


    Stem rooted deep in the waters of life, with a flower that is forever opening.
    a broken pencil





    Pointless





    I have a very redundant personality, no one takes me seriously
    condom, cause it's see through, flexible and slippery
    The moon....- always changing, plus I love the night.
    A pop quiz because you never know what you're going to get!
    A tree because I stand tall for what I beleive in
    Empty match box, full of water.
    A turtle. I tend to hide in my shell often: I don't go out much so I'm a bit of a hermit and I'm a little bit antisocial
    perfume......good odor and pricey to have
    a brick wall

    Which object has more penetrating ability in the event of a collision?

    A 500 million kg ship going 1 m/s or a 50 million kg ship with the same kinetic energy as the first one?Which object has more penetrating ability in the event of a collision?
    Penetrating ability depends not only on the kinetic energy but on shape and stiffness of the hulls.


    Average force is calculated as loss of impulse divided by collision time. The loss of impulse could be significantly more in case of heavier ship because P^2=(mv)^2=2mE, or P=Sqrt(2mE), where E is kinetic energy. But we do not know anything about collision time. If small ship will be hardened and have shorter collision time because of that it could penetrate further even though heavy ship has larger momentum.
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  • An object is placed 21cm in front of a concave mirror of radius of curvature 20cm. A glass slab of thickness?

    3cm and refractive index 1.5 is placed close to the mirror in the space between the object and the mirror. Find the position of the final image formed. The distance of the nearer surface of the slab from the mirror is 10cm.





    Please tell all the steps. Thanks in advance.An object is placed 21cm in front of a concave mirror of radius of curvature 20cm. A glass slab of thickness?
    the slab just makes your optical path bigger by (n-1)*d (d is the thickness) so 1.5cm in this case (1.5-1)*3





    so your optical distance to the mirror is not 21cm but instead 22.5cm 21+1.5.


    the focal distance of a concave mirror is positive so f=R/2=10cm





    so your calculation goes very simply





    1/si+1/22.5=1/10





    si=10*22.5/(22.5-10)





    si=18cm





    now remember that this is the optical distance not the distance it self





    remember the glass is actually between cm 10 and 13 from the mirror


    First you realise that this distance is bigger then the 10 cm so it migth be on the other side of the glass lets try cheking this out by subtracting the total optical path introduced by the slab





    18-1.5=16.5cm it's the actual distance from the mirror of of your image





    just a heads up 3 things





    first I don't consider any reflection in the glass,





    second the glass hear is plane so no lens effect in it,





    third but not last if anyone would ask you the magnification you would have to use the optical distances





    m=-18/22.5


    something inverted and less then one

    How does the Escape Velocity of an object depend on it's Mass and Radius?

    What is the escape velocity of the Moon compared to the Earth? What is the


    escape velocity of Mars compared to the Earth?How does the Escape Velocity of an object depend on it's Mass and Radius?
    Hi. Whoa big fella, one at a time. The escape velocity depends on the mass of a body and how close you are to the center of that mass. The denser the body the closer you can get to the center. Escape velocity climbs as these two criteria are met. Worst case is a black hole where you can get close enough to the center that the velocity equals that of light.How does the Escape Velocity of an object depend on it's Mass and Radius?
    Escape velocity of an object doesnt depend upon its mass,radius or whatever.It is calculated by taking the square root of twice the acceleration due to


    gravity multiplied by the radius of the planet.Now that you have the formula,take a calculator and compute the ratios for earth(11.2 km/s),Moon and Mars.SORRY,PLEASE EXCUSE ME FOR THAT!!!
    http://www.geocities.com/CapeCanaveral/H鈥?/a>

    An object is placed 25 cm to the left of a lens of focal length 20 cm. Where does the final image form?

    An object is placed 25 cm to the left of a lens of focal length 20 cm. 75 cm to the right of this lens is a plane mirror. Where does the final image form?An object is placed 25 cm to the left of a lens of focal length 20 cm. Where does the final image form?
    Without the mirror, di = 1/(1/f-1/do) = 100 cm. With the mirror at 75 cm, the converging rays are reflected back to form the image at 50 cm.

    What can I use to cushion an object that I'm sending in the mail?

    I'm sending away my Xbox, and I don't know what to use to cushion so it doesn't break on it's way there.What can I use to cushion an object that I'm sending in the mail?
    you can use styrofoam pellets that you can buy at most packing stores, or some thing less expensive is newspaper balled up, or use a smaller type of container or maybe a mailing envelope available at the post office. use your imagination.there are a gazillion things to use.What can I use to cushion an object that I'm sending in the mail?
    bubble wrap, or styrofoam

    Is it legal to send a sharp object in the mail?

    My friend in California wants to send me a bladed weapon for my birthday because I like collecting them and he has tons of them, but since I live in Taiwan I'm not sure if it's legal, does anyone know anything about this?





    He's going to send it by Air Mail.Is it legal to send a sharp object in the mail?
    There would not be concerns due to shipping rules - a packaged blade is an inert piece of metal and not a hazard to transport. You may want to check local regulations as to whether the weapon is legal to own in Taiwan.Is it legal to send a sharp object in the mail?
    You can send anything you want (except explosives and hazardous materials and a few other dangerous things). I mean you can send a gun cross country so why wouldn't you be able to send a blade?
    Bladed weapon is considered to be lethal and it is illegal to mail them especially by air. My advise is to contact your local authority for clearance on this matter
    Go to the store, any store, WalMart K-Mart etc. Ask them how they got their knives. Riiiight...they were shipped to them.





    Of course he can send you a knife.

    When light falls on an object what happens to the lectrons of the object?

    esp. metals, which have a lot of free elctrons..





    u know that light is an elctromagnetic wave. so what heppens to the electrons due to that?When light falls on an object what happens to the lectrons of the object?
    Light falling on a metal can cause electrons to be ejected from the metal. This is known as the photoelectric effect.





    Solar cells use this effect to create energy from the sun's rays





    Other uses and a more indepth explanation can be foind on wikiWhen light falls on an object what happens to the lectrons of the object?
    the electron basicly aborb the photon. Then the electrons are at a higher state. At this point they can reemit the photon either imediately or after a little bit.





    If the eletron goes from state A to state B when it absorbs the photon it can dexcite in the same way and emit a photon of the same energy. (this is the reflection that makes metals shinny)





    Or it can dexcite by going from state B to C to A, and then it will emite two photons of two differant energyies. (this is why objects have colors)





    If the photon energy is large enouph then the electron will be so excited that it will escape the atom that it sits in and fly away (this is the photo electric effect).





    another thing that can happen is that if the electron stays in that ecited state for a minute and another photon comes allong and stimulates the electron to dexcite then it will emite a photon of the same wavelength in the same direction. This will only happen if it is a very spicific wavelength of light that stimulates the emmition. In this case you can get Light Amplified Stimulated Emmition of Radiation (LASER).





    There are other things that can happen too.
    Ur question relates to photoelectric effect


    It states that when light of SUITABLE FREQUENCY and WAVELENGTH falls on a metal surface electrons are ejected which r known as photoelectrons.


    this effect supports the particle theory of light


    u can get the details on the net.


    I guess u must know about the dual nature of light. If not we can talk bout it later
    Aaahhhh.... Good old quantum stuff...





    What happens depends on the wavelength of light hitting the object and the material itself. Not all wavelengths will make all materials do neat stuff. When a photon of the correct wavelength comes into contact with a given electron the electron ';jumps'; energy states (called quanta). Now, there are several different energy states, and what state the electron went to will dictate what it does. There are also some things called intersystem crossing and some other, more technical stuff that I won't go into.





    But, alas, the universe is a lazy place. Electrons don't like being all wound up with nowhere to go! So, they spit back out that photon. Often this happens so fast that it can be a real pain to detect in a lab without good equipment. The photon emitted is the same wavelength and, therefore, energy as the one that was originally absorbed. Neat huh?





    let's talk about glow in the dark stuff for a second. You know, toys and things that you hold up to a lightbulb for a few seconds and then they glow in the dark afterward. The reason they glow is because of this reaction. Its called phosphorescence. What happened is that the visible light stimulated the electrons to a higher energy state. Even when the light stimulation was removed from the object the object kept emitting photons slowly as its electrons relaxed back to baseline.





    Flourescence works the same way, except that, by definition, the object quits emitting electrons as soon as the light source is removed.





    Now, for your question about metals, its how photovoltaic cells work. Certian metals produce a voltage when stimulated by certian wavelengths of UV/Vis light. Like some solar panels. Some (but not all) metals produce instantaneous flourescence and, therefore, add to their natural shinyness and light scattering properties. It can be hard to tell which is flourescence and which is merely scattering without using the spectrum outside of the visible.





    Oh, and one more thing! Light doesn't have to be visible light to cause electrons to jump energy levels. Anywhere can work but, once again, its material specific.





    This principal of physics and chemistry is widely used in analytical chemistry for identifiying substances both quantatively and qualatatively.
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  • Can an std live on a foreign object outside the human body?

    Can an std live on a foreign object outside the human body?


    i steped on a used condum and was walking in my house. then my brother dropped his towel where i stepped and put it back on where his u know what is. cn he risk getting an std? pretend the condum had stds. i stepped on it about 2.5 weeks ago the towell thing happened today.Can an std live on a foreign object outside the human body?
    yes, in fact i have an umbrella stand with herpesCan an std live on a foreign object outside the human body?
    Not unless he picks up the condom and licks it clean! The only std that can live on a foreign object outside the human body are pubic lice, which are crabs and scabies. Actually, scabies burrow under the skin.
    Depending on how long it's been out there, mot likely he is fine. I mean, if it's been sitting there for atleast 24/48 hours, even that is prolly enough time where you would be safe.
    no

    Why would someone want to kill the object they are jealous of?

    They laugh when harm falls upon them and even wish to kill the person? How can someone be that sick with jealousy?Why would someone want to kill the object they are jealous of?
    well is simple ppl usually have hatred inside when they r jealous it is said that they r hidden enemies and they wont let go any opportunity of harming u .


    remember jealousy makes a person the greatest enemy he wont let u kno first but when he gets the chance to harm u then he wont miss it .


    why ppl do this bcuz





    jealousy=hatred





    they cant bear ur existance its that simpleWhy would someone want to kill the object they are jealous of?
    I understand the trait of jealosy, but I can;t understand killing anyone over it. I do know that if bitterness isn't dealt with it only festers and grows and worsens.
    Easy. Married couples who divorce. One has been cheated on by the other. They lie about it, the person who has been cheated on finds out from someone else.





    Jealousy is almost a sickness. It is caused in my opinion through two emotions, envy and anger. Anger is something one can deal with. Envy on the other hand is hard to get rid of. Envy is not always a bad thing. You can be envious of someone with new shoes, or a style, or respect a person enough to be envious of what they have. Anger on the other hand mixed with envy is a deadly combination. Someone who has extreme levels of jealousy should work on anger issue management to reduce the jealousy and stress they feel. Either by forgiving the person for their wrongdoing, and moving on with your life, or seeking help to get over your trauma.





    Jealousy can be a very scary thing.

    What object was used to punish prisoners?

    I'm talking about that thing that they'd lay your head down and a blade would drop on it, and it beheads them. It sounds vicious, but it's for a history paper. I can't remember the nameWhat object was used to punish prisoners?
    Guillotine - it's just the guy's name who invented it. And t was invented so that it would be a more HUMANE way of killing people. I guess before Mr. Guillotine invented this thing, they'd chop at people's heads with an ax, and it would take a few swings to get their head all the way off. The Guillotine got it off in one go.





    Ahhhh - progress!What object was used to punish prisoners?
    The guillotine.





    http://en.wikipedia.org/wiki/Guillotine
    Guillotine.
    Guillotine
    A guillotine