A sonar device on a submarine sends out a signal

Calculate the speed of sound in water if the distance of the object from submarine is 3, m. An athlete completes one round of a circular track of diameter m in 40 s. What will be the distance at the end of 2minutes 20s?

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A sonar device on a submarine sends out a signal

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A boy hears an echo of his own voice from a distant hill after 1 s. What is the distance of the hill from the boy? An engine is approaching a hill at constant speed. When it is at a distance of 0. A ship which is stationary, is at a distance of m from the seabed. The ship sends an ultrasound signal to the seabed and its echo is heard 4s.

A sonar device on a submarine sends out a signal

Submarine Sonar in a nutshell, is a technology that allows submarines to see underwater. It is achieved by emitting sound waves and listening to their echoes. This principle is called the echolocation which is the same as the bats which locate via air. When a sound wave that is emitted by the sonar system encounters an object in the water, some of the wave bounces back as echoes. By analyzing the time taken for the echo to return and by the characteristics of echo, submarines can determine the distance, size and even the type of object that was found. Sound waves have unique properties and that properties vary depending on the environment.

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Give two practical applications of reflection of sound waves. How many images will be formed if angle between mirrors is 30 degree? How many times does it vib The disease caused by breathing polluted air is:. Two children are at opposite ends of an aluminium rod. Calculate the speed of sound in water if the distance of the object from the submarine is m ,. Calculate the speed of sound in water if the distance of the object from submarine is 3, m. When a sound is reflected from a distant object, an echo is produced. A sonar device on a submarine sends out a signal and receives an echo 5 s later. Which characteristic of the sound help you to identify your friend by

SONAR is a tool that allows ships and other vessels to find and identify objects in the water through a system of sound pulses and echoes.

A stone is dropped from the top of a tower m high into a pond of w Testbook Edu Solutions Pvt. SI unit of electric current is. A Sonar device on a submarine sends out a signal and receive an eeho 5s later. Speed of sound is highest in which medium? Solution in Punjabi Watch Video Solution. Why is sound wave called longitudinal wave? The following is the relation between the object distance and the image distance in a plane mirror image :. Cod liver oil obtained from fish is rich in:. Which among the following is not a globally accepted National 'hot spot' of India?