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Author Question: A Hooke's law spring is mounted horizontally over a frictionless surface. The spring is then ... (Read 18 times)

Kikoku

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  • Posts: 540
on: Jul 28, 2018
A Hooke's law spring is mounted horizontally over a frictionless surface. The spring is then compressed a distance d and is used to launch a mass m along the frictionless surface. What compression of the spring would result in the mass attaining double the speed received in the above situation?
 a. 1.41d
  c. 2.00d
  b. 1.73d
  d. 4.00d

Question 2

Of the following heat engines, which has the highest efficiency?
 a. Hero's engine
  c. a car's gasoline engine
  b. a Carnot engine
  d. a truck's diesel engine


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momolu

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

C

Answer to Question 2

B


Kikoku

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Reply 2 on: Jul 28, 2018
Gracias!

kthug

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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