According to the first law of thermodynamics, the amount of work done by a heat engine equals the amount of a. work done on the engine. b. waste heat it produces. c. thermal energy added to the engine minus the waste heat. d. thermal energy added to the engine plus the waste heat.

B is the correct answer to this problem

The correct answer is option C.

Explanation:

The first law: thermodynamics:

Q = heat added to the system

w = work done by the system

= Internal energy

The work done by the system is equal to the difference of energy added to the system from the internal energy.This internal energy of the system is the energy which is left unused and given out to the surrounding by the heat engine in the form of thermal energy.

1. they vary with a higher number because boiling is way hotter than melting