PLZ HELP FOR A TEST !! What flows in must equal what flows out. This statement describes:
Voltage
Resistance
Current
Power

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.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?