The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface and 12.0 s later the reflected signal is detected. How deep is the ocean below
the ship?
A. 124.8 m
B. 35952 m
C. 17976 m
D. 8988 m

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?