Question: A heat engine does 3 0 . 0 J of work and exhausts 2 0 . 0 J of waste heat during each cycle. Part

A heat engine does

30.0

J of work and exhausts

20.0

J of waste heat during each cycle.

Part A

What is the engine's thermal efficiency?

Express your answer as a percentage.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

nothing

%

Request

Answer

Part B

If the cold

-

reservoir temperature is

30.0

,

what is the minimum possible temperature in

C of the hot reservoir?

nothing

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