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Author Question: At room temperature (20.C) the area of a hole in a sheet of material is 5.505 cm2. When heated to ... (Read 74 times)

serike

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on: Jul 27, 2018
At room temperature (20.C) the area of a hole in a sheet of material is 5.505 cm2. When heated to 830.C the area increases by 29.0 mm2.
 
  (a) What is the thermal coefficient of linear expansion for the material?
  (b) If the temperature had decreased to -76. Fahrenheit, what would be the area of the hole?

Question 2

What is the average power if the current is Io sin(t) and the voltage is Vo sin(t) ?
 
  What will be an ideal response?


Andromeda18

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Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 32.5  10-6 C-1
(b) 5.476 cm2

Answer to Question 2

(IoVo) /2


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