An electron and a proton are each placed at rest in a uniform electric field of magnitude 554 n/c. calculate the speed of each particle 52.0 ns after being released. electron m/s proton m/s need ?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

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