What is the ω of the smaller wheel if the angular velocity of the larger wheel is 6.5 rad/s? (Hint: same linear velocity).

The heliocentric and the geocentric models of the solar system included these central principles

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.