### Compute the mean kinetic energy in terms of k and t

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According to Kinetic theory, the molecules of ordinary matter are in constant random motion. The enegy "E" of a molecule is a random variable with density function p(x) = (1)(KT)(e)(-e)/(KT), where T is the temperature in kelvins and K is Boltzmann's constant. Compute the mean kinetic energy in terms of K and T.

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