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Homework Help: Mastering phusics ch.19

  1. Jan 24, 2005 #1
    A heat engine does 30.0 of work and exhausts 25.0 of waste heat during each cycle.

    Part A. What is the engine's thermal efficiency?

    I've used n=W_out/Q_H, but I didn't get the right answer. Is there another equation that I need to use or was that it?
  2. jcsd
  3. Jan 24, 2005 #2

    Doc Al

    User Avatar

    Staff: Mentor

    That equation should give you the efficiency. What values did you use?
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