The diagram shows a ripple tank
lamp
motor
water
white card
(a)
the motor makes a noise when it is turned on
describe the differences between the prope
motor and the water waves in the ripple tank
en the properties of the sound waves produced by the

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

Group of elements with the same number of valence electrons