1.calculate the weights of the following masses 1.2kg
2.450g
3.0.75kg
4.3,000,000mg
2.A body weighs 75N. Calculate its mass

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.

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

When solid surfaces slide over each other the kind of friction that occurs is called friction