A bat chirps to locate a tasty lunch. The chirp travels at 340 m/s and its echo is heard 1 s after the chirp. Distance to the lunch is
A) 85 m.
B) 170 m.
C) 340 m.
Question 2
Ultrasonic sound that travels at 1530 m/s in ocean water is bounced off the ocean floor and returns to the ship above. If the round trip takes 3 s, the depth of the water is
A) 1530 m.
B) 2295 m.
C) 3060 m.
D) 4590 m.