If I'm cold and want to warm up with an electric heater, which energy would I need in order to make the heater work? a=light energy
b=electric energy
c=potential energy
d=mechanical energy

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.