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Simple Harmonic Motion and waves: Velocity and acceleration

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Please help with 14, 15 and 16 with step by step solutions showing equations used and answers.

answer 14 not 16.1cm, answer 15 not 8.123 m/s, answer 16 not 19.6 m/s^2.

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The expert examines simple harmonic motion and waves velocity and acceleration.

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Please do 14, 15 and 16 with step by step solutions showing equations used and answers. Please show all steps and thnaks for help.

answer 14 not 16.1cm, answer 15 not 8.123 m/s, answer 16 not 19.6 m/s^2.

Answer 14.

The oscillator is completing 43 vibrations in 20.4 s hence the frequency of the oscillator i.e. the number of oscillations completed in one second is given by

n = 43/20.4 = 2.1078 Hz

The frequency of the wave is the same as ...

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