20. If we double the root-mean-square speed (thermal speed) of the molecules of a gas, then
(A) its temperature must increase by a factor of 4.
(B) its temperature must increase by a factor of 2.
(C) its temperature must incrcase by a factor of
(D) its pressure must increase by a factor of 2.
(E) its pressure must increase by a factor of 4.
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統計: A(15), B(0), C(3), D(0), E(0) #3093861
統計: A(15), B(0), C(3), D(0), E(0) #3093861