emanandomer emanandomer

20-02-2022
Physics

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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

Respuesta :

cactus999 cactus999

20-02-2022

Answer:

B. 170m

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