You want to reduce your energy bills. A.) calculate the power of a light bulb that transfers 6000J every minute.
B.) calculates the power of a different bulb which has a current of 0.05 A through it when there is a potential difference of 240 V through it.
C.) both bulbs are equally bright. Indicate and explain which bulb you should use.

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.