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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

1 Answer

10 votes

Answer:

B. 170m

Question explained in the photo attached

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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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