48. A sample of gas is held in a container at a constant pressure. If the volume is halved, how will the rms (root-mean-square)-speed of the molecules change compared with the original rms-speed?
(A) √2 times smaller
(B) √2 times greater
(C) the same
(D) 2 times greater
(E) 2 times smaller
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統計: A(2), B(0), C(2), D(0), E(0) #3421243
統計: A(2), B(0), C(2), D(0), E(0) #3421243