Andy has two strong magnetic marbles of equal size. what will happen when he puts the two marbles about 2 centimeters apart? a) they will roll towards each other and stick together. b) they will roll away from each other and push apart. c) one will attract the other one. d) the two marbles will not move.

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Name the non metal condut electricity

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