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Author Question: A Carnot engine operates between two reservoirs with unknown temperatures. If the Carnot engine ... (Read 261 times)

sheilaspns

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on: Jul 29, 2018
A Carnot engine operates between two reservoirs with unknown temperatures. If the Carnot engine operates at 67 efficiency, what is the ratio of the absolute temperatures of the reservoirs, Tc/Th?
 
  A) 0.33
  B) 0.0012
  C) 0.0025
  D) 0.67

Question 2

Two protons are fired toward each other in a particle accelerator, with only the electrostatic force acting. Which of the following statements must be true about them as they move closer together? (There could be more than one correct choice.)
 
  A) Their kinetic energy keeps decreasing.
  B) Their electric potential energy keeps decreasing.
  C) Their electric potential energy keeps increasing.
  D) Their kinetic energy keeps increasing.
  E) Their acceleration keeps decreasing.


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leannegxo

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

A

Answer to Question 2

A, C


sheilaspns

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


leannegxo

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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