Riley is cleaning his room (a once a year activity) and pulls the Hoover with a force of 8 N a total distance of 20 metres. How much work does he do? Where does this energy end up

The approximate rotation period of the Moon is: A. 1 day B. 1 week C. I month D. Infinite, since the Moon does not rotate, but keeps one face towards the Earth at all times.

From an origin you walk 3 meters east, 7 meters west where are you now relative to the origin

Why your body does not tolerate vertical g-forces, particularly those downwards, as well as it tolerates horizontal g-forces.

How does quantum theory explain the working of a photocell? A. Each light wave with a certain minimum energy releases an electron from an atom. B. Each photon of light with energy below a certain value releases an electron from an atom. C.

Name two technologies that people in developing nations could benefit from.

Two objects experience a 12 N electrical force between them. What force will the objects experience if the distance between them is doubled?

a submarine moving directly upward in the water at constant speed. The weight of the summer and it is 500,000 N. The submarines motors are off. The magnitude of the buoyant force acting on the submarine is

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall