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Author Question: A thick-walled metal pipe of length 20.0 cm has an inside diameter of 2.00 cm and an outside ... (Read 55 times)

kfurse

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on: Jul 29, 2018
A thick-walled metal pipe of length 20.0 cm has an inside diameter of 2.00 cm and an outside diameter of 2.40 cm. What is the total surface area of the pipe, counting the ends, in square centimeters?
 
  A) 276 cm2
  B) 277 cm2
  C) 278 cm2
  D) 279 cm2

Question 2

If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will
 
  A) become one-half its original value.
  B) also double.
  C) become one-fourth its original value.
  D) become 1/ of its original value.
  E) become four times its original value.


ebenov

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

A


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