74. •A rock is thrown from the upper edge of a 75.0-m vertical dam with a speed of 25.0 m/s at 65.0° above the horizon. How long after throwing the rock will you (a) see it and (b) hear it hit the water flowing out at the base of the dam? The speed of sound in the air is 344 m/s. (Neglect any effects due to air resistance.)

74. •A rock is thrown from the upper edge of a 75.0-m vertical dam with a speed of 25.0 m/s at 65.0° above the horizon. How long after throwing the rock will you (a) see it and (b) hear it hit the water flowing out at the base of the dam? The speed of sound in the air is 344 m/s. (Neglect any effects due to air resistance.)

Name: 74. •A rock is thrown from the upper edge of a 75.0-mvertical dam wit
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Description: 74. •A rock is thrown from the upper edge of a 75.0-mvertical dam with a speed of 25.0 m/s at 65.0° abovethe horizon. How long after throwing the rock will you(a) see it and (b) hear it hit the water flowing out at thebase of the dam? The speed of s

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter17: Physics Of Hearing

Section: Chapter Questions

Problem 83PE: A diagnostic ultrasound echo is re?ected from moving blood and returns with a frequency 500 Hz...

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