A skier leaves the horizontal end of a ramp with a velocity of 20m/s and takes 3.5 seconds to land to the ground. The height of the ramp is m and he lands m from the edge of the ramp.

If a clock aboard a space ship traveling at 0.900 c of the speed of light relative to earth chimes once at the beginning of the hour and again when it reads one hour later, how much time would an observer on earth say elapsed between the two chimes?

Rohit is trying to tune an instrument

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island