What is the centripetal acceleration of a small laboratory centrifuge in which the tip of the test tube is moving at 19.0 meters/second in a circle with a radius of 10.0 centimeters? a. 1.82 × 102 meters/second2 b. 3.61 × 103 meters/second2 c. 5.64 × 103 meters/second2 d. 2.49 × 103 meters/second2 e. 1.18 × 103 meters/second2

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