1.

The_periodic_time_of_a_body_executing_simple_harmonic_motion_is_4s._After_how_many_intervals_from_time_t=0,_its_displacement_will_be_half_of_its_amplitude?$

A. ¬Ω s
B. 1/3 s
C. ¼ s
D. 1/6 s
Answer» C. ¬¨¬®¬¨‚à´ s


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