Author Question: A source of sound waves is placed at the center of a very large sound-reflecting wall. The source ... (Read 301 times)

RODY.ELKHALIL · **on:** Aug 6, 2020

Question 1

A sculptor strikes a piece of marble with a hammer. Find the speed of sound through the marble (in km/s). (The Young's modulus is 50 × 10⁹ N/m² and its density is 2.7 × 10³ kg/m³.)

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5.1

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4.3

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3.5

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1.3

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1.8

Question 2

A source of sound waves is placed at the center of a very large sound-reflecting wall. The source emits 0.500 W of power. Two meters from the source the intensity in W/m² is

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9.95 × 10⁻³.

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1.99 × 10⁻².

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0.313.

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0.399.

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0.625.

amcvicar · **Reply #1 on:** Aug 6, 2020

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