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In fig - 21.25 a gas sample expands...

In fig - 21.25 a gas sample expands from `V_0 ` to `4.0 V_0 ` while its pressure decrease from `p_0 ` to `P_0 // 4.0` .if `V_0 = 1.0 m^3 ` and `p_0 = 60 Pa.` how much work is done by the gas if its pressure changes with volume via (a) path A . (b) path b, and (c ) path c ?

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`(A) 1.8 xx 10^2 J , (b ) 105 J ~~ 1. 1 xx 10^2 J , (c ) 45 J`
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