Sonar

An Indian submarine and an enemy submarine move towards each other during maneuvers in motionless water in the Indian ocean. The Indian submarine moves at 50 km/h , and the enemy submarine at 70 km/h . The Indian sub sends out a sonar signal (sound wave in water) at 1000 Hz . Sonar waves travel at 5500 km/h . What is the frequency detected by the Indian submarine

A sonar system fixed in a submarine operates at a frequency 40.0 kHz, An enemy subarine moves towords the sonar with a speed of 360 km/h. What is the frequency of sound refielcted by the submarine? (Take the speed of sound in water to be 1450 m/s)

A submarine that is not moving sends out a sonar sound wave travelling at 2000 m /s is, which reflects off a boat back to the submarine. The sonar crew detects the reflected wave 8 s after it was sent out. How far away is the boat from the submarine ?

A sonar emits pulses on the surface of water which are detected after reflection from its bottom at a depth of 1531 m . If the time interval between the emission and detection of the pulse is 2 s , find the speed of sound in water.

A submarin Travels through water at a speed of 8.00(m)/(s) , emitting a sonar wave at a frequency of 1400 Hz. The speed of sound in the water is 1533 m/s. What frequency is detected by an observer riding on sub as the submarines approach each other?

Two submarines are underwater and approaching each other head-on. Sub A has a speed of 12 m/s and sub B has a speed of 8 m/s. Sub A sends out a 1550-Hz sonar wave that travels at a speed of 1522 m/s. What is the frequency detected by sub B?

An indian submarine is moving in the Arabian sea with constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050(m)/(s) in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves. Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. Q. The velocity of enemy ship should be

An indian submarine is moving in the Arabian sea with constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050(m)/(s) in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves. Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. Q. The speed of indian submarine is