問題詳情

54. Two different gases of similar mass density at room temperature react differentlyas the pressure is varied. Specifically, as the external pressure is raised from l atmto 1.01 atm, the volume of gas A is reduced by 0.1% while the volume of gas B isreduced by 0.2%. Which of the following statements is true?
(A) The sound speed of gas A is faster.
(B) Low frequency sound waves travel faster than the high frequency ones in
(C) Low frequency sound waves travel slower than the high frequency ones ingas A.
(D) For the same sound source of frequency f, the frequency changes more as itenters gas B.
(E) As we reduce the pressure, the volume of the gas does not al ways increase.gas A.

參考答案

答案:A
難度:計算中-1
書單:沒有書單,新增