What are 4 types of motion

When two or more materials combine chemically they form a

What are the units represent work

There is a 200n boulder stuck in ur yard. You want to use 2 meter long lever to pry it loose from the ground.

An ice skater of a mass of 50kg is initially moving at 5m/s, before decreasing their kinetic energy by 75J. Calculate their final speed.

A charged ball of mass 10g and charge 2 C is placed at rest in a field of field strength 5NC as shown. The acceleration of the ball is

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