An astronaut approaching the moon sends a ratio signal of frequency `5 xx 10^(3) MHz` towards moon to find the speed of his rocket. The frequency of waves reflected back from the moon is `86 kHz` more than the original frequency. Calculate the velocity of the rocket relative to the moon.

An astronaut is approacing the moon. He sends a radio wave of frequency 5 xx 10^(9) Hz towards the moon. The frequency of the radio echo received by him has a frequency 9 xx 10^(4) Hz more than that of real frequency. The relative velocity of the rocket with respect to the moon is

An astronaut is approaching the moon. He sends a ratio signal of frequency 5 xx 10^(9) Hz and find that the frequency shift in echo received is 10^(3) Hz . Find his speed of approach.

A stationary motion detector sends sound waves of frequency 3.00 MHz toward a truck approaching at a speed of 61.0 m/s. What is the frequency of the waves reflected back to the detector?

There is a detective submarine installed inside sea water post 26/11 incident to detect terrorists. It is moving with constant speed V_theta along a straight line and it sends a wave which travels with speed V_w = 1100m/sec in water. Initially waves are getting reflected from a fixed Island and the frequency detected by the submarine is found to be 20% more than the original frequency. When a terrorist ship moving towards the submarine with constant speed V_s comes in between the submarine and the island. Frequency of waves reflected from the ship is 80% more than the original frequency. Bulk modulus of sea water is