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Author Question: A metal wire has a resistance of 10.00 W at a temperature of 20.0C. If the same wire has a ... (Read 180 times)

audragclark

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on: Jul 28, 2018
A metal wire has a resistance of 10.00 W at a temperature of 20.0C. If the same wire has a resistance of 10.55 W at 90C, what is the resistance when its temperature is 0.0C?
 a. 13.8 W
  c. 9.84 W
  b. 9.69 W
  d. 0.70 W

Question 2

Dams at two different locations are needed to form a lake. When the lake is filled, the water level will be at the top of both dams. Dam 2 is twice as high and three as wide as Dam 1 . How much greater is the force of the water on Dam 2 than the force on Dam 1? (Ignore atmospheric pressure; it is pushing on both sides of the dams.)
 a. 24
  c. 6
  b. 12
  d. 3


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honnalora

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

C

Answer to Question 2

B


audragclark

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Reply #2 on: Jul 28, 2018
Thanks


honnalora

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Reply #3 on: Jul 28, 2018
Welcome :)


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