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Author Question: A 2000-kg ore car rolls 50.0 m down a frictionless 10.0 incline. If there is a horizontal spring at ... (Read 97 times)

Arii_bell

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on: Jul 28, 2018
A 2000-kg ore car rolls 50.0 m down a frictionless 10.0 incline. If there is a horizontal spring at the end of the incline, what spring constant is required to stop the ore car in a distance of 2.00 m?
 a. 340 kN/m
  c. 1700 kN/m
  b. 68.1 kN/m
  d. 85.1 kN/m

Question 2

In which system is heat usually transferred from the cooler part to the warmer part?
 a. a stove as it heats up water
  b. a refrigerator that is running
  c. an electric fan that is running
  d. none of the above, because it is impossible to transfer heat in this manner


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Zebsrer

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


Arii_bell

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Reply #2 on: Jul 28, 2018
Thank you!


Zebsrer

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Reply #3 on: Jul 28, 2018
Always glad to help...


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