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In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 3.00 cos 5t + ? 5 where x is in centimeters and t is in seconds.

(a) At t = 0, find the position of the piston. cm

(b) At t = 0, find velocity of the piston. cm/s

(d) Find the period and amplitude of the motion. period s amplitude cm.

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