Fluid Substance

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset …

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Heat and gas

Generally, when substances are heated, their particles begin to move faster. In solids, molecules vibrate together; heat makes them vibrate …

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Temperature

Temperature is a physical quantity that is a measure of hotness and coldness on a numerical scale. It is a …

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