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Author Question: A cup of coffee is enclosed on all sides in an insulated container 1/2 cm thick in the shape of a ... (Read 538 times)

olgavictoria

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on: Jul 28, 2018
A cup of coffee is enclosed on all sides in an insulated container 1/2 cm thick in the shape of a cube 10 cm on a side. The temperature of the coffee is 95C, and the temperature of the surroundings is 21C. Find the rate of heat loss (in J/s) due to conduction if the thermal conductivity of the cup is 2  10-4 cal/scmC.
 a. 62
  b. 74
  c. 230
  d. 160
  e. 12

Question 2

If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas?
 a. 12.5 J/molK
  b. 20.8 J/molK
  c. 29.1 J/molK
  d. 27.1 J/molK
  e. 43.4 J/molK


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cdmart10

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

B

Answer to Question 2

D


olgavictoria

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  • Posts: 528
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

cdmart10

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Reply 3 on: Yesterday
:D TYSM

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