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38.A student heard the echo of his voice from a nearby solid object after 2se. How far away is the solid object? The speed of sound in air is 170m/s. A. 85m B. 170m C. 300m D. 340m
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38.A student heard the echo of his voice from a nearby solid object after 2se. How far away

is the solid object? The speed of sound in air is 170m/s.
A. 85m
B. 170m
C. 300m
D. 340m

User Mayur Manani
by
8.0k points

1 Answer

10 votes

Answer:

B. 170m

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38.A student heard the echo of his voice from a nearby solid object after 2se. How-example-1
User Archana Chaurasia
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