Recent content by saurabhjain

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    Why work done by a force is a scalar product

    Why work done by a force was taken as dot product between force applied and displacement caused?
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    Hot water is heavier than cold water.

    If we repeat this experiment with volume as constant i.e. putting same amount of water at same temperature in two closed containers so that they are full without any air gap, then heat one of those. After the heated one has gained enough energy, its mass will be more, even though its weight on...
  3. S

    Temperature & Survival at Big Crunch

    What will be the temperature at the time of big crunch? and will any life form survive at the time of big crunch?
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    Q* (the set of rational cuts) has least upper bound property or not?

    Thanks a lot! The sqrt 2 example above, makes the picture clear.
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    Q* (the set of rational cuts) has least upper bound property or not?

    I am struggling to draw this point home: To prove that R has LUB property, we used the following reasoning: First we defined R to be set of cuts (having certain properties) where each cut corresponds to a real number and then we proved any subset A of R has LUB (least upper bound) property...
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    Why every gas would exert zero pressure at -273.15 degree celsius

    I was reading about the experiment of constant volume gas thermometer today. When we extrapolate the presuure -temperature lines, the lines would meet at point -273.15 degree celsius, which is zero presure. I was wondering whether it is a matter of coincidence or some science behind it. The...
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