I have a pencil stuck on my foot

Anyways have some more free points :)

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.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called