Light rays bend when they enter from one medium to another of different density. The amount of bending is determined by the refractive indices of the two media.
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Are there any types of friction in swimming?

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Friction is any force that opposes another force, Glucoslim Gummies like the force of gravity on a rocket or the tread of a shoe on a court. Without friction a swimmer would not
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Does temperature affect the bounce of a rubber ball?

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Temperature does not affect the bounce of a rubber ball. Let's say you bounce a rubber ball on the grass. The result will be different then bouncing a rubber ba
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Does tennis use velocity how?

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Pretty much everything in this universe involves velocity since velocity is practically the speed of an object when a tennis ball is hit it has both a horizonta
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What is the used of youth in the nation?

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The youth of today may become the agents of national security in the future. They will train to work in all capacities of national security.