問題詳情
45. A wave is transmitted along a string.Which of the following actions can quadruple the energy transmitted per unit time?
I. double the frequency
II. double the tension of the string
III. double the amplitude
IV. double the wave velocity
V. quadruple the frequency
VI. quadruple the amplitude
(A) III, V
(B) II,Ⅲ, V
(C) I, VI
(D) I, III
(E) I, II, III
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增