Electromagnetic Forces

Front

A _________________ is needed to make a motionless object move.

Back

force

Front

To make an object in motion stop, you need to ________.

Back

apply a force in the direction opposite to the way the object is moving.

Front

In an air hockey game, a cushion of air increases the speed of play because it _______.

Back

lowers the friction between the table and the puck

Front

If a student pushes with 500 N of force on a cart against a wall. The cart doesn't move. Why?

Back

The wall pushed back with a force of 500 N

Front

Forces in the same direction

Back

add together

Front

Net force of 0 N...

Back

...does not move

Front

When two magnets interact...

Back

opposite poles attract

Front

Can magnetism go through objects?

Back

yes

Front

Can a steel nail pick up a paperclip?

Back

Only if the nail is touching a temporary magnet

Front

The greater the distance between magnets, the _________ the force between them.

Back

weaker