Why is water in kept in ?gharas? in summer ?

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why are metals able to conduct current so well?

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Explain the Archimedes’s Principle ?

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a bullet of mass m travelling at velocity v has a kinetic energy of ½mv2 when it strikes a ballistic pendulum of mass 1000 grams. The kinetic energy of the twomasses moving together just after the moment of impact is about a thousand times smaller than ½mv2. What has most of the bullets initial kinetic energy beenconverted to?

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I’ve heard that in quantum physics a lot of fancy mathematical objects like hilbert spaces are used, and that in particular, measurable quantities are described by self-adjoint operators. Are these things related to what you have just explained? : quantum physics

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Explain the Thermometers’ ?

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what happens when an object travels in the speed of light hits another object?

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Explain the weights in pounds of liquid gallons?

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Mercury is a better barometric fluid than water because?

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When the letters of an opposite side board are found in a mirror as reverse,why the same is not shown as up and down?

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In Einstein's mass energy relation E=mc2 why velocity of light is used and never ordinary velocities?what is the exact explanation?

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When the seas freeze in-winter, the fish never die why?

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