Question: Dolphins rely on echolocation to be able to survive in the ocean. In a 2 0 C , a dolphin produces an ultrasonic sound with

Dolphins rely on echolocation to be able to survive in the ocean. In a

20

,

a dolphin produces an ultrasonic sound with a frequency of

115

kHz

.

Use

1530

/

s for the speed of sound in

20

C ocean water. What is the wavelength of this sound, in meters? While remaining stationary, the dolphin emits a sound pulse and receives an echo after

0.220

.

How far away d

,

in meters, is the reflecting object from the dolphin?

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