Photon energy is proportional to which of the following?

a. period of the light wave

b. frequency of the light wave

c. speed of the light wave

d. color of the light wave

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.