what is the propulsive force of the rocket which drops the amount of gases with mass m = 15 kg at time t = 3s with velocity v = 200 m / s

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

you cant move and you feel like someones pushing you down onto your bed it can feel like you want to get up but you just can't it can be extremely scary

heats surface water up

answerscientific theory;