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Author Question: A perfect Carnot engine operates between 350 K and 600 K. The engine delivers 10 kJ of work in each ... (Read 160 times)

saliriagwu

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on: Jul 29, 2018
A perfect Carnot engine operates between 350 K and 600 K. The engine delivers 10 kJ of work in each cycle. How much heat is extracted from the 600 K reservoir in one cycle?
 
  A)
 
  34 kJ
 
  B)
 
  27 kJ
 
  C)
 
  17 kJ
 
  D)
 
  21 kJ
 
  E)
 
  24 kJ

Question 2

A magnifying lens has a focal length of 10 cm. A person has a near point of 25 cm.
 
  (a) What is the magnification of the lens for that person when their eyes are focused at infinity?
  (b) What is the magnification of the lens for that person when their eyes are focused at their near point?
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janeli

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

E

Answer to Question 2

(a) 2.5
(b) 3.5


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