anonymous
  • anonymous
According to Carnot, what does the efficiency of a heat engine depend on? A. the input temperature only B. the exhaust temperature only C. the ratio of input temperature to exhaust temperature D. the ratio of exhaust temperature to input temperature ***not sure! thanks:)
Physics
schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
as I wrote before, the efficiency of a machine of Carnot, is: \[\Large \eta = 1 - \frac{{{T_2}}}{{{T_1}}}\] where T_1 is the temperature of the hot reservoir T_2 is the temperature of the cold reservoir
anonymous
  • anonymous
ohh okay!! so it depends on exhaust energy, right? choice B?
Michele_Laino
  • Michele_Laino
no, since we have two temperatures

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anonymous
  • anonymous
ohh okay! sorry!! so it should be choice C?
Michele_Laino
  • Michele_Laino
hint: this quantity: \[\Large \frac{{{T_2}}}{{{T_1}}}\] is a ratio
anonymous
  • anonymous
ohh oops!!! choice d? :O
Michele_Laino
  • Michele_Laino
yes! option D
anonymous
  • anonymous
woo!! thanks:)
Michele_Laino
  • Michele_Laino
thanks!! :)

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