Science masters??!! i dont get these 3 questions, could you please explain them to me??!! thanks!?

Question

thanks and please dont just give me the answer could you also explain them. thank you.

1) if the efficency of a gasolineis 25 percent, what happens to the missing 75 percent of the energy in the fuel?

2) A diesel runs at a higher temperature than a gasoline engine. Predict which engine would be more efficent. Explain your answer.

3) Why would it be a mistake to locate a wood-burning stove on the second floor of a two-story house?

thank you all again!!!

Answer 1

Gasoline engines are about 12% efficient. The rest goes off as heat. Your car needs a radiator to remove the excess heat.

A diesel runs at a higher pressure than a gasoline and is more efficient(about 25%)

Carrying wood upstairs is added work. Warm air rises