Question

A sonar pulse is sent to the ocean bottom at 25°C, and it takes 1.20 s for the echo to come back. How deep is the bottom?

1.79 km

0.92 km

1.84 km

0.90 km

Speed of Sound Waves in Various Media

Medium m/s
Air (0°C)
331
Air (20°C)
343
Helium (0°C)
972
Water (25°C)
1,493
Seawater (25°C)
1,533
Copper (25°C)
3,560
Iron (25°C)
5,130

Answer 1

i think its 0.92

Answer 2

I actually got C - 1.84 km. Did you use Seawater?

Answer 3

oh shoot wait a sec

Answer 4

you are correct

Answer 5

forgot to divide by 2 after bc it comes back lol

Answer 6

I did Distance = Velocity * Time
= 1560 * 1.20 meter
= 1872 meter
The depth of the bottom = 1872/2 meter
= 936 meter
= 0.92 km

Answer 7

yes lol

Answer 8

awesome! glad we figured that out(:

Answer 9

Yep np