Light waves from the sun can travel through outer space and reach the earth. This suggests that light is a(n)
A) mechanical wave.
B)compression wave
C)Longitudinal wave
D)electromagnetic wave

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n