# Physics, science

posted by .

A sonar generator on a ship produces periodic ultrasonic waves at a frequency of 2.2 MHz. The wavelength of the waves in seawater is 5.310-4 m. When the generator is directed downward, an echo is received 15.2 s later. How deep is the ocean in m?

• Physics, science -

frequency(1/s)*wavelength(m) = speed(m/s)
speed(m/s)*time(s) = distance

so

(2.2*10^6/s)(5.3*10^-4 m)(15.2s) = 17723m

so, the depth is half the distance traveled, or 8862m

## Similar Questions

1. ### physics

waves on the surface of a liquid are observed to have a wavelength of 12.9 mm and a speed of 30.9 cm/s. the frequency of the wave motion is: a. 1.8 mHz b. 24 Hz c. 42 mHz d. 2.4 Hz e. 2.4 mHz how do i know which label to use (mHz or …
2. ### physics

An underwater sonar system uses mid-wavelength sound waves. These waves of 15 cm in wavelength propagate through seawater with an amplitude of 0.038 nm. Seawater has a density of 1030 kg/m3, and sound through seawater travels at a …
3. ### physics

1.calculate th speed of waves in water that are 0.4m apart and have a frequency of 2hz?
4. ### science

Which of the following travels the fastest?
5. ### Physics

A sonar generator on a submarine produces periodic ultrasonic waves at a frequency of 2.60MHz . The wavelength of the waves in seawater is 5.90×10−4m . When the generator is directed downward, an echo reflected from the ocean …
6. ### Science

6. Sonar is used to inspect pipelines and bridge foundations. In this scenario, sonar takes advantage of the fact that (1 point) A.sound waves can reflect.*** B.sound waves can diffract. C.sound waves can spread out. D.sound waves …
7. ### Science

1. A weatherman reports, “The storm waves are about 2 meters high and about 35 meters apart.” What properties of waves is the reporter describing?
8. ### Physics help

a wave with a frequency of 3.1 hz and a wavelength of 0.3 meters experiences a lengthening of wavelength to 2.6 meters what is the new frequency of this wave?
9. ### Science

Im sorry i am totally stumped What is the main difference between mechanical and electromagnetic waves A. Mechanical waves involve the transfer of energy; electromagnetic waves do not B. Mechanical waves require a medium to travel …
10. ### science

1. What is the main difference between mechanical and electromagnetic waves A. Mechanical waves involve transfer of energy; electromagnetic waves do not. B. Mechanical waves require a medium to travel in; electromagnetic waves do not. …

More Similar Questions