I spin my son on the merry-go-round at the playground. When he walks inward towards the center of the merry-go-round, the rotational inertia of the system will_____.

When the distance between two charges is tripled, the electrical force between the charges

Two objects rotate on a merry-go-round, one at r=1 m and the other at r=2m from the center. The object rotating at 1 m has less _______than the object at 2 m.

An electric heater is rated at 400 watts when used in a 110 V circuit. The safety fuse can handle 12 amps of current. How many heaters can be safely operated in the circuit?

An object that has gravitational potential energy must be

Caruso is said to have made a crystal chandelier shatter with his voice. This is a demonstration of

My sister at a height of 25 m has a potential energy of 22,500 Joules. What is her mass?

I lift my 40 kg son to a height of 1 meter, while he lifts me (80 kg) to a height of 0.5 m. My son did _______as I did.

A 10 kg brick and a 1 kg book are dropped in a vacuum. The force of gravity on the 10 kg brick is

The speedometer of an automobile reads