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Author Question: Object A is acted on by only object B. The mass of object A is 20.0 kg and its acceleration is 4.00 ... (Read 151 times)

ghost!

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on: Jul 29, 2018
Object A is acted on by only object B. The mass of object A is 20.0 kg and its acceleration is 4.00 m/s2 west. Object B is acted on by two forces, the force of object A on object B and another unknown force.
 
  If mass of object B is 40.0 kg and the acceleration of object B is 3.00 m/s2 west, what is the unknown force?
  A)
 
  40 N west
 
  B)
 
  120 N west
 
  C)
 
  80 N east
 
  D)
 
  200 N west
 
  E)
 
  80 N west

Question 2

The intensity of solar radiation near the earth is 1.4  103 W/m2. What force is exerted by solar radiation impinging normally on a 5.0 m2 perfectly reflecting panel of an artificial satellite orbiting the earth?
 
  A)
 
  1.4  104 N
  B)
 
  9.4  10-5 N
  C)
 
  1.4  10-4 N
  D)
 
  2.3  10-5 N
  E)
 
  4.7  10-5 N


nhea

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

D

Answer to Question 2

E


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ghost!

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


nhea

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


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