Which is not a property of an electromagnetic wave?

O It is made of magnetic fields

It travels at the speed of light

O It is made of electrical fields

It carries energy only through matter

If the graph represents speed what is measured on the x and y axes

Does the bar magnet attract, repel, or have no effect on the loop?

Which way does current always flow?

Astronauts visiting planet x have a 250-cm-long string whose mass is 5.00 g. they tie the string to a support, stretch it horizontally over a pulley 2.00 m away, and hang a 4.00 kg mass on the free end.

An object is moving forward and then gets knocked sideways, what is this force called?

Two iron rods are placed horizontally, touching end-to-end. One end of one rod is heated. After some time, the other rod also feels warm to touch.

Which part of the motor is responsible for reversing the flow of current?

In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth movement of electrons is called what? A) revolutions per minute B) direct current C) alternating current.

A train travels at a speed of 30 miles/hour and traveled a distance of 240 miles. How long did it take the train to complete its journey?

What is the mass number of a potassium atom that has 20 neutrons