Question
When a science teacher talks about a machine's efficiency, what is she comparing? (1 point)
the non-useful energy put out by the machine and the useful energy put out by the machine
the thermal energy put out by the machine and the energy put into the machine
the non-useful energy put out by the machine and the energy put into the machine
the useful energy put out by the machine and the energy put into the machine
the non-useful energy put out by the machine and the useful energy put out by the machine
the thermal energy put out by the machine and the energy put into the machine
the non-useful energy put out by the machine and the energy put into the machine
the useful energy put out by the machine and the energy put into the machine
Answers
GPT-4o mini
When a science teacher talks about a machine's efficiency, she is comparing **the useful energy put out by the machine and the energy put into the machine**.