Which statement best describes an electric current? O Energy transfers inside of an electric device.
O Charged particles move through a conductor.
O Type of conductor or insulator,
O The measurement of the electric potential energy in a circuit.



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?

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

If a simple machine reduces the strength of a force, what must be increased?