Work done = press x vol change. Work done(J) = 200,000 Pa x 100 x10 -6 m 3 =

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Presentation transcript:

Work done = press x vol change

Work done(J) = 200,000 Pa x 100 x10 -6 m 3 =

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J 100,000 x 250 x10 - 6

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J 100,000 x 250 x = 25 J

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J 100,000 x 250 x = 25 J

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J 100,000 x 250 x = 25 J 100,000 x 250 x

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J 100,000 x 250 x = 25 J 100,000 x 250 x = 12.5 J

Work done = press x vol change Work done(J) = 200,000 Pa x 100 x10 -6 m 3 = 20 J Work done(J) = area under graph = 37.5 J 100,000 x 250 x = 25 J 100,000 x 250 x = 12.5 J

D to A Work done on the gas (compression)

Work done = press x vol change D to A Work done on the gas (compression)

Work done = press x vol change B to C Work done by the gas (expansion)

Work done = press x vol change B to C Work done by the gas (expansion)

Cold isotherm Hot isotherm volume Pressure

Cold isotherm Hot isotherm volume Pressure

Cold isotherm Hot isotherm volume Pressure

Cold isotherm Hot isotherm volume Pressure

Cold isotherm Hot isotherm volume Pressure

Cold isotherm Hot isotherm Work done during the cycle = the enclosed area volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes Which curves are isothermal and adiabatic? volume Pressure Heat energy can enter or leave the gas

The Carnot cycle - only has isothermal and adiabtic changes Which curves are isothermal and adiabatic? volume Pressure Heat energy can enter or leave the gas Heat energy can not enter or leave the gas Work done in expanding comes from the gas’ internal KE so it cools

The Carnot cycle - only has isothermal and adiabtic changes Which curves are isothermal and adiabatic? Which curves are expansion – work done by gas ? volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes Which curves are isothermal and adiabatic? Which curves are expansion – work done by gas ? Which curves are contraction – work done on the gas ? volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure

The Carnot cycle - only has isothermal and adiabtic changes volume Pressure Work done during the cycle = the enclosed area