42 假設 c 為聲速(speed of sound),L 為繩子的長度(the length of the string),λ 為繩子的波長(the length
of wavelength),則此繩子的駐波(standing wave)的基頻(fundamental frequency)f 為:
(A) 1/2 L
(B) c/2 L
(C) 1/2 λ
(D) c/2 λ
答案:登入後查看
統計: A(18), B(175), C(22), D(57), E(0) #1644693
統計: A(18), B(175), C(22), D(57), E(0) #1644693