The cycle of the figure consists of four processes. Make a chart with rows label

Question

The cycle of the figure consists of four processes. Make a chart with rows labeled A to D and columns labeled ?Eth, Ws, and Q.

Fill each box in the chart with +, ?, or 0 to indicate whether the quantity increases, decreases, or stays the same during that process.

Pphysics 313 A2 HW19 Problem 19.9 Problem 19.9 The cycle of the figure consists of four processes. Make a chart with rows labeled A to D and columns labeled Eth , W., and Q. Adiabat A B c Isotherm Part A Fill each box in the chart with +-or 0 to indicate whether the quantity increases, decreases, or stays the same during that process reset ? help

Explanation / Answer

Process A:
   isochoric
   so, Ws = 0
   dE = + ( as P increases, so T increases)
   Q = - ( as dE is +ve and Ws is 0)

Process B:
   Adiabatic
   so, Q = 0
   and P is decreasing, so T decreases, so dE = -ve
   Hence, W = +

Process C:
   Isothermal
   so, dE = 0
   W = - ( final volume is more than initial volumne)
   so Q = +

Preocess D:
   Isobaric
   so, P = const
   W = + ( gas iscompressing)
   dE = - [ if V decreases, T decreases too]
   dQ = - [ if V decreases, T decreases too]

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