A8kg cat is running 4m/s. how much kinetic energy does it have

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string