A boy does a work of 800 J is dragging a sack of rice through a distance of 10 m. What is the
magnitude of force applied by the boy?​

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.