A system consists of N gas molecules, each with mass m. Their rms speed is vrms. Their total translational kinetic energy is:
A. (1/2)m(Nvrms)2
B. (1/2)N(mvrms)2
C. (1/2)mv2 rms
D. (1/2)Nmv2 rms
E. N [(1/2)mvrms] 2
Answer: D. (1/2)Nmv2 rms
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