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1. |
Two longitudinal waves: s1 = 3cos(11t) & s2 = 3cos(10t) interfere. What is the amplitude of the resulting wave? |
A. | 6cos(0.5t) |
B. | 6sin(0.5t) |
C. | 6cos(10.5t) |
D. | 6sin(10.5t) |
Answer» B. 6sin(0.5t) | |