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Suppose you could suddenly increase the speed of every molecule in a gas by a factor...

Suppose you could suddenly increase the speed of every molecule in a gas by a factor of 2.

Would the rms speed of the molecules increase by a factor of 2^(1/2), 2, or 2^2?

Would the gas pressure increase by a factor of 2^(1/2), 2, or 2^2?

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