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A cylinder with a piston restrained by a linear spring contains 2 kg of carbon dioxide at 500 kPa, 400°C. It is cooled to 40°C,
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Apr 4, 2019
in
Mathematics
by
kratos
thermodynamics
rates or fluxes of entropy
energy equation
ideal gas
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1
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Consider the same system as in the previous problem. Let the valve be opened and transfer enough heat to both tanks
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Apr 3, 2019
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Mathematics
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kratos
energy equation
thermodynamics
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Two tanks are connected by a valve and line. The volumes are both 35 ft^3 with R-134a at 70 F, quality 25% in A
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Apr 2, 2019
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Mathematics
by
kratos
multiple devices
energy equation
bernoulli
thermodynamics
cycle processes
reversible shaft work
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1
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A computer chip dissipates 2 kJ of electric work over time and rejects that as heat transfer from its 50°C surface to 25°C air.
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Apr 1, 2019
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Mathematics
by
kratos
energy equation
available energy
thermodynamics
carnot cycles
reversible work
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1
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A piston cylinder contains 0.1 kg air at 300 K and 100 kPa. The air is now slowly compressed in an isothermal (T = C) process
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Mar 31, 2019
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Mathematics
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kratos
thermodynamics
energy equation
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1
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A cubical block is initially floating on water such that its 4/5th volume is submersed in water. Now oil is poured on water
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Mar 30, 2019
in
JEE
by
kratos
energy equation
liquids
jee mains 2019
jee mains
solids
thermodynamics
jee
aerodynamics
hydrodynamics
fluid mechanics
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1
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Calculate the work done in a piston cylinder arrangement during the expansion process,
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Mar 28, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
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We want to find the change in u for carbon dioxide between 600 K and 1200 K.
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Mar 27, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
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votes
1
answer
A sealed box was found which stated to have contained an alloy composed of equal parts by weight of two metals A and B.
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Mar 27, 2019
in
Mathematics
by
kratos
entropy generation
thermodynamics
energy equation
compressibility factor
+2
votes
1
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Ice cubes in a glass of liquid water will eventually melt and all the water approach room temperature. Is this a reversible process?
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Mar 23, 2019
in
Class 11
by
kratos
energy equation
changes around us
class-8
class-11
thermodynamics
class-9
class-7
heat
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1
answer
A piston/cylinder arrangement has the piston loaded with outside atmospheric pressure and the piston mass to a pressure
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Mar 23, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
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1
answer
10 kg of water in a piston cylinder arrangement exists as saturated liquid/vapor at 100 kPa, with a quality of 50%.
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Mar 19, 2019
in
Mathematics
by
kratos
polytropic process
thermodynamics
energy equation
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1
answer
Air is expanded from 400 kPa, 600 K in a polytropic process to 150 kPa, 400 K in a piston cylinder arrangement.
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Mar 18, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
+2
votes
1
answer
A rigid insulated container has two rooms separated by a membrane. Room A contains 1 kg air at 200°C and room B has 1.5 kg
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Mar 16, 2019
in
Class 12
by
kratos
energy equation
energy
kvpy
thermodynamics
force
class-12
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1
answer
Assume the same setup as in Problem 5.48, but the room has a volume of 100 m^3. Show that the final state is two-phase
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Mar 16, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
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1
answer
A 65 gallons rigid tank contains methane gas at 900 R, 200 psia. It is now cooled down to 540 R. Assume ideal gas
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Mar 15, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
ideal gas
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1
answer
A piston/cylinder contains 1 kg water at 20°C with volume 0.1 m^3. By mistake someone locks the piston preventing it from moving
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Mar 15, 2019
in
Mathematics
by
kratos
boundary work
thermodynamics
energy equation
+2
votes
1
answer
A cylinder/piston arrangement contains 5 kg of water at 100°C with x = 20% and the piston, mP = 75 kg, resting on some stops,
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Mar 10, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
+2
votes
1
answer
Water in a 6-ft^3 closed, rigid tank is at 200 F, 90% quality. The tank is then cooled to 20 F. Calculate the heat transfer during
asked
Mar 8, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
ideal gas
+2
votes
1
answer
An air ****** contains compressed air in a small cylinder. Assume that the volume is 1 cm^3, pressure is 1 MPa,
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Mar 7, 2019
in
Mathematics
by
kratos
thermodynamics
energy equation
ideal gas
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