1.
A body exhibits simple oscillatory motion. If the amplitude is 6.2m and crests at the beginning of oscillation and ω is 1.6 radians per second then identify the body’s displacement after 3.5 seconds.
2.
The speed of sound is 343m/s. A police car moving at 34m/s sounds a 1,400Hz siren on a windless day. what is the frequency perceived by a stationary pedestrian by the roadside as the police car passes
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