problem19_47

# University Physics with Modern Physics with Mastering Physics (11th Edition)

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19.47: a) We aren’t told whether the pressure increases or decreases in process bc. The cycle could be In cycle I, the total work is negative and in cycle II the total work is positive. For a cycle, tot tot so , 0 W Q U = = The net heat flow for the cycle is out of the gas, so heat . 0 and 0 tot tot < < W

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Unformatted text preview: b) J 800 tot tot-= = Q W ca bc ab W W W W + + = tot . since = ∆ = V W bc p V p W ab since ∆ = is constant. But since it is an ideal gas, T nR V p ∆ = ∆ J 1660 ) ( =-= a b ab T T nR W J 2460 J 1660 J 800 tot-=--=-= ab ca W W W...
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• Heat, net heat flow

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