True or false: electromagnets are an example of how magnetism can create electricity. true or false: electromagnets are an example of how electricity can create magnetism.

true or false: electromagnetic induction is where we use magnetism to create electricity.

true or false: you can change the amount of strength that an electromagnet has.

true or false: iron fillings can be use to show magnetic field lines around bar magnets but not around electromagnets.​

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)