Calculate the magnitude of distance and displacement of a body moving in a complete circle

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

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.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.