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Author Question: An inventor tries to sell you his new heat engine that takes in 40 J of heat at 87C on each cycle, ... (Read 90 times)

mcmcdaniel

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on: Jul 29, 2018
An inventor tries to sell you his new heat engine that takes in 40 J of heat at 87C on each cycle, expels 30 J at 27C, and does 10 J of work. Would it be wise to invest in this engine? Back up your conclusion with numerical calculations.
 
  What will be an ideal response?

Question 2

Metallic bonding is due to
 
  A) atoms bonding to hydrogen molecules.
  B) the transfer of electrons between atoms.
  C) unequal charge distributions around neutral molecules.
  D) the sharing of electrons by all atoms.


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LP

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Save your money He has claimed an efficiency of 25, but the greatest possible efficiency for an engine operating between these temperatures is only 17, for a Carnot engine.

Answer to Question 2

D


mcmcdaniel

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

Animal_Goddess

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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