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1) A person starts rocking a boat at a steady rate, thus producing sinusoidal waves on the surface of the water. This person causes the boat to oscillate 72 times per minute, each oscillation producing a wave crest 9 cm above the undisturbed level of the water. The waves reach the shore (24 m away) in approximately 10 seconds. At a given instant, approximately how many wave crests are there between the boat and the shore?

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Answer #1

72 ,오 (S) Period af lo keond kotha velocity- We Khaw that have leh As owstanee between the crest to Crest Cme wave Xrn No at

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