What is a 7 letter word that describes the relationship between frequency and period?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h