anonymous
  • anonymous
A heat engine has a cold reservoir of 250°C and a hot reservoir of 715°C. What is the efficiency of the engine
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
do you have options
anonymous
  • anonymous
65.0% 60.8% 73.6% 58.6% 69.1%
anonymous
  • anonymous

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Hayleymeyer
  • Hayleymeyer
I thought 47%
johnweldon1993
  • johnweldon1993
Are we to assume a Carnot heat engine?
johnweldon1993
  • johnweldon1993
If so it would be \[\large efficiency = 1 - \frac{T_c}{T_h}\]
anonymous
  • anonymous
sorry i am done with this question i passed the test tho :D
johnweldon1993
  • johnweldon1993
Great job! This question seemed off anyways...you are supposed to use Kelvin which would lead to the answer @Hayleymeyer gave of 47% however here the answer that they wanted was from using Celsius... Oh well, anyways...Good job! :D lol
anonymous
  • anonymous
thx for your help everyone :)
Hayleymeyer
  • Hayleymeyer
opssie

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