How much gasoline will spill out of the open tank if the temperature rises? Emis

Question

How much gasoline will spill out of the open tank if the temperature rises? Emissivity for question 8

An open 16 gallon steel tank is filled completely with gasoline. How much gasoline will spill out or the open tank if the temperature rises from 14 degree C to 27 degree C? The net power radiated by an object with a surface area 0.100 m2 is 10.2 W. If the temperature of the object is 39.0 degree C and the temperature of the room is 20.0 degree C, what is the object's emissivity? The pressure in a tire is 220 kPa when the temperature is 16.0 degree C. Assuming no air is pumped in or out and the volume of the tire remains constant, what is the tire pressure if the temperature increases to 27.0 degree C? How much gasoline will spill out of the open tank if the temperature rises?

Explanation / Answer

PROBLEM #7.    I agree with your work shown on the test paper and with your answer of 0.19 gal.   Thus, I think you are correct and it was graded incorrectly.  

PROBLEM #8.     Here, you need to do the 4th powers of the two temperatures separately and subtract them last.

     10.2 = e (5.67E-8) 9 0.1 ) [ (312)^4 - (293)^4 ]  

solving for e, gives e = 0.846

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