Quiz3-Sol-SSII09

Quiz3-Sol-SSII09 - Physics 2C Summer Session II Quiz #3...

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Physics 2C Summer Session II Quiz #3 Multiple Choice. Choose the answer that best completes the statement or answers the question. 1 . A monatomic ideal gas goes through the Carnot cycle shown in the A are P A = 1400 kPa and V A = 10 L respectively. The volumes at C and D are V C = 24 L and V D = 15 L: Carnot Cycle The volume at point B is A) 12 L B) 14 L C) 15 L D) 16 L E) 18 : 3 L In a Carnot cycle the volume ratios V B =V A and V C =V D are equal. Hence V B = V A ( V C =V D ) = 10 (24 = 15) = 16 L ! D 2 . The pressure at point C is A) 445 kPa B) 875 kPa C) 712 kPa D) 496 kPa E) 794 kPa For an adiabatic expansion from point B the pressure at C is given by P C = P B ( V B =V C ) ; where P B = P A V A =V B . Hence P C = 1400 10 16 (16 = 24) 5 = 3 = 445 : 2 kPa ! A 3 . The shaded area enclosed inside the cycle is 1
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A) 6580 J B) 1558 J C) 4482 J D) 5022 J E) 11600 J The shaded area is the work done during one cycle. This is given by W = P A V A ln ( V B =V A ) P C V C ln ( V C =V D ) W = ( P A V A P C V C ) ln (1 : 6) = (1400 ± 10 445 : 2 ± 24) ln (1
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Quiz3-Sol-SSII09 - Physics 2C Summer Session II Quiz #3...

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