7. Two waves are sent to a long string to create a standing wave. Let x be positive (x ≥ 0). Where i
問題詳情
7. Two waves
are sent to a long string to create a standing wave. Let x be positive (x ≥ 0). Where is the first node(the smallest value of x)? (A) 5 cm (B) 10 cm (C)50 cm (D) 100 cm (E) 200 cm