In a gas-powered car, a battery a) produces chemical potential energy to run the engine. b) produces mechanical work to rotate the tires and make the car move. c) produces electrical energy to start the car. d) produces thermal energy to produce heat for the heating and cooling system.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.