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Author Question: An 8000-kg aluminum flagpole 100-m long is heated by the Sun from a temperature of 10C to 20C. Find ... (Read 184 times)

evelyn o bentley

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on: Jul 28, 2018
An 8000-kg aluminum flagpole 100-m long is heated by the Sun from a temperature of 10C to 20C. Find the heat transferred (in J) to the aluminum if the specific heat of aluminum is 0.215 cal/g/C.
 a. 7.2  105
  b. 7.2  107
  c. 7.2  103
  d. 7.2  101
  e. 7.2  102

Question 2

An 8000-kg aluminum flagpole 100 m long is heated by the Sun from a temperature of 10C to 20C. Find the work done (in J) by the aluminum if the linear expansion coefficient is 24  106 (C)1 . (The density of aluminum is 2.7  103 kg/m3 and 1 atm = 1.0  105 N/m2.)
 a. 287
  b. 425
  c. 213
  d. 710
  e. 626


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polinasid

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

b

Answer to Question 2

c


evelyn o bentley

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


polinasid

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


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