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Author Question: A 20-N crate starting at rest slides down a rough 5.0-m long ramp, inclined at 25 with the ... (Read 121 times)

Jipu 123

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on: Jul 28, 2018
A 20-N crate starting at rest slides down a rough 5.0-m long ramp, inclined at 25 with the horizontal. 30 J of energy is lost to friction. What will be the speed of the crate at the bottom of the incline?
 a. 0.98 m/s
  c. 3.5 m/s
  b. 2.1 m/s
  d. 4.7 m/s

Question 2

According to the first law of thermodynamics, for any process that may occur within an isolated system, which of the following choices applies?
 a. entropy remains constant
  c. entropy decreases
  b. entropy increases
  d. None of the above choices apply.


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Bison

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

C

Answer to Question 2

D


Jipu 123

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Bison

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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