A copper rod with a mass of 0.180 kg slides on parallel horizontal steel rails, 0.520 m apart, and carries a current of 11.0 A. The coefficient of friction between the rod and rails is 0.360. What vertical, uniform magnetic field is needed to keep the rod moving at a constant speed

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit

The strong nuclear force acts over a small distance than the electrostatic force. true or false