Homework Answers
Given data,
Initial minus final change in internal energy = U1 - U2 = 90J
Heat lost to the surrounding = Q = -84J (Heat rejected from system)
Assumptions
accrding to question, it is rigid still vessel
therefore, change in kinetic energy = KE = 0.
Therefore, Change in potential energy = PE = 0.
Considering gas in the tank as a system,
tank is rigid theterfeo, no boundary work.
Applyinng energy balance on the system.
Net energy transfer by heat and work = chnage in internal energy.
Therefore, work exhange during process = W = -6J (Answer ).
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