Meg lifted a box of books with a mass of 20 kg from the floor to a shelf 1.4 m off the ground. the applied force was equal to the weight of the box of books. how much work did meg do?

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

The movement of electrons between atoms is called an

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?