問題詳情

4. At t = 0, what is the transverse velocity of the element at x = 9 cm?


(A) +2 cm/s,
(B) -2 cm/s,
(C) +10 cm/s,
(D)-10 cm/s,
(E) 0 cm/s.

參考答案

答案：99

統計：A:0,B:0,C:0,D:0,E:0

難度：計算中