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Why does heated air expand?
Temperature is often explained as the average thermal energy of the substance at hand. Therefore the hotter a substance is the more thermal energy it has. For most substances the statistical mechanics formula, (3/2) kT works fine. In the preceding formula, k is the Boltzmann constant and T is the absolute temperature.
As thermal energy enhances, the molecules of a substance move faster. These molecules hit other molecules faster and harder and bounce away from collisions faster and harder. Without a container to limit its shape, a gas will merely expand. Were a container present, the pressure of the gas in the container would enhance.
Bragg's law (Sir W.L. Bragg; 1912) While a beam of x-rays strikes at crystal surface wherein the layers of atoms or ions are separated regularly, the maximum intensity of the
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explain specific latent heat of fusion with formula
What makes a flashlight suddenly become dim or bright when you shake it?
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