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Author Question: The temperature inside a Carnot refrigerator placed in a kitchen at 22C is 2.0C. The heat extracted ... (Read 164 times)

xroflmao

  • Hero Member
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  • Posts: 515
on: Jul 29, 2018
The temperature inside a Carnot refrigerator placed in a kitchen at 22C is 2.0C. The heat extracted from refrigerator is 89 MJ/h. What power is needed to operate this refrigerator?
 
  A)
 
  1.7 kW
 
  B)
 
  1.8 kW
 
  C)
 
  1.5 kW
 
  D)
 
  1.9 kW
 
  E)
 
  1.6 kW

Question 2

An object is placed 10 cm from a convex lens of focal length 20 cm. What is the magnification?
 
  A)
 
  0.50
  B)
 
  1.0
  C)
 
  1.5
  D)
 
  2.0
  E)
 
  2.5


kjohnson

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

B

Answer to Question 2

D


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