What type of device is a car engine? a. a heat pump that uses work to move a heat b. a heat pump that uses heat to do work c. a heat engine that uses work to move heat d. a heat engine that uses heat to do work !

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

Which levels of government establish and implement educational requirements for minors

How does an observation about an object differ from an inference about that object