問題詳情
19. Two harmonic waves traveling in opposite directions interfere to produce a standing wave
cribed by y = 2 sin 4x cos(3t) where x is in m and t is in s. What is the speed (in n
interfering waves?
(A)0.75
(B)0.25
(C)1.33
(D) 12
(E)3.0
參考答案
答案：A
統計：A:1,B:0,C:0,D:0,E:0
難度：計算中