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Author Question: A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten ... (Read 40 times)

c0205847

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on: Jul 28, 2018
A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 6.000 W at 20C and increases to 9.700 W as the indium starts to melt. atungsten = 4.50  10-3 (C)-1 . What is the melting temperature of indium?
 a. 351C
  c. 132C
  b. 731C
  d. 157C

Question 2

The water behind Grand Coulee Dam is 1200 m wide and 160 m deep. Find the hydrostatic force on the back of the dam. (Hint: the total force = average pressure  area)
 a. 5.2  109 N
  c. 13.2  1010 N
  b. 8.8  1010 N
  d. 15.1  1010 N


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sultansheikh

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

D

Answer to Question 2

D


c0205847

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Reply 2 on: Jul 28, 2018
:D TYSM

Joy Chen

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

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