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1. |
The equation of wave is given byy=10sin(2πt/30+α)If the displacement is 5cm at t=0, then the total phase at t=7.5s will be __________ |
A. | π/3rad |
B. | π/2rad |
C. | 2π/5rad |
D. | 2π/3rad |
Answer» E. | |