A 40kg girl is riding in an elevator going up , while standing on a scale it shows that she weighs 500 Newton’s. What is the upward acceleration of the elevator

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