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Author Question: A pole-vaulter clears 5.00 m. With what speed does he strike the mat in the landing area? a. 2.70 ... (Read 40 times)

nramada

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  • Posts: 580
on: Jul 28, 2018
A pole-vaulter clears 5.00 m. With what speed does he strike the mat in the landing area?
 a. 2.70 m/s
  c. 10.8 m/s
  b. 9.90 m/s
  d. 21.6 m/s

Question 2

According to the second law of thermodynamics, which of the following applies to the heat received from a high temperature reservoir by a heat engine operating in a complete cycle?
 a. must be completely converted to work
  b. equals the entropy increase
  c. converted completely into internal energy
  d. cannot be completely converted to work


mariahkathleeen

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  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


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