Why don't we use the metric system?

A man wishes to pull a crate 15m across a rough floor by exerting a force of 100 N. The coefficient of kinetic friction is 0.25. For the man to do the least work, the angle between the force and the horizontal should be: A. 0 B. 14? C. 43? D. 66? E.

You are trying to push your stalled car. although you apply a horizontal force of 400 n to the car, it doesn't budge, and neither do you.

Which nuclear energy produces household electricity, fusion or fission?

Most of the energy used by light on earth comes from

If the coolant in a refrigerator was not compressed back into a liquid after it flowed through the refrigerator what would happen

A force between two objects?

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?