Air to the motion of objects through it

What are two different ways you could find the value of a? explain these methods.

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.

Which describes increasing the efficiency of energy resource