A planet of mass m orbits a star of mass M, where m< 1. The orbital speed equals 2r/T
II. The gravitational force equals GMm/12
III. If the orbital radius r were greater, T would also be greater.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)

The amount of work done is determined by 2 factors. describe an example of work (using the scientific definition) list the 2 factors that determine the amount of work done.