17.A string 1 m long is clamped tightly at one end and is free to slide up and down at the other. Which of the following is a possible wavelength for standing waves on this string?
(A) 1 m
(B)
m
(C)
(D) 2 m
(E) 3 m
答案:登入後查看
統計: A(2), B(2), C(0), D(1), E(0) #3427017
統計: A(2), B(2), C(0), D(1), E(0) #3427017