plz help…..A student heard the echo of her voice from nearby solid object after 2 sec. how far away is the solid object? The speed of sound in air is 340m/s.
A. 170m
B. 340m
C. 510m
D. 680m
Question
Question
plz help…..A student heard the echo of her voice from nearby solid object after 2 sec. how far away is the solid object? The speed of sound in air is 340m/s.
A. 170m
B. 340m
C. 510m
D. 680m
Answer:
B.
340meters per second x 2 seconds = 680 meters away
divided by 2coming back = 340
Hope this helps
Explanation: