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The position of a particle in cm is given by x = (7) cos 6t, where t is in seconds.
1) What is the frequency?
........ Hz
2) What is the period?
......... s
3) What is the amplitude of the particle's motion?
......... cm
4) What is the first time after t = 0 that the particle is at its equilibrium position?
In what direction is it moving at that time?
......in the positive direction
......in the negative direction
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