Thermodynamics: Work and Heat Show solution step by step. Please answer correctly. 1. A gas in a closed system expands in a quasi-equilibrium process from a volume of 0.2 m³at 200 kpa, 80°C to a volume of 0.6 m³ in such a manner that p=225-125 V, with p in kPa and V in m3. How much work is done? Answer: 70 kJ 2. During a reversible nonflow process, the work is -148.1 Btu. If V1- 30ft³ and the pressure varies as p=(-3V+100) psia, where V is in ft³, find V2. Answer: 10 ft3

Elements Of Electromagnetics
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Topic: Thermodynamics

Thermodynamics:
Work and Heat
Show solution step by step.
Please answer correctly.
1. A gas in a closed system expands in a quasi-equilibrium process from a volume of 0.2 m³at 200 kpa,
80°C to a volume of 0.6 m3 in such a manner that p=225-125 V, with p in kPa and V in m³. How much
work is done?
Answer: 70 kJ
2. During a reversible nonflow process, the work is -148.1 Btu. If V1- 30ft3 and the pressure varies
as p=(-3V+100) psia, where V is in ft³, find V2.
Answer: 10 ft3
Transcribed Image Text:Thermodynamics: Work and Heat Show solution step by step. Please answer correctly. 1. A gas in a closed system expands in a quasi-equilibrium process from a volume of 0.2 m³at 200 kpa, 80°C to a volume of 0.6 m3 in such a manner that p=225-125 V, with p in kPa and V in m³. How much work is done? Answer: 70 kJ 2. During a reversible nonflow process, the work is -148.1 Btu. If V1- 30ft3 and the pressure varies as p=(-3V+100) psia, where V is in ft³, find V2. Answer: 10 ft3
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