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Molecular Physics | Thermodynamics
A unit mass of carbon dioxide gas is contained in a cylinder behind a piston and is heated from p1 = 552 kPa and V1 = 0.0184 m3
to p2 = 138 kPa. It expands acc
ording to a law pV1.3 = constant and the heat supplied to the gas during
the expansion process is 10.125 kJ. Calculate, per unit of mass:
(a) the work done during the of expansion process.
(b) the change in the internal energy of carbon dioxide.
to p2 = 138 kPa. It expands acc
ording to a law pV1.3 = constant and the heat supplied to the gas during
the expansion process is 10.125 kJ. Calculate, per unit of mass:
(a) the work done during the of expansion process.
(b) the change in the internal energy of carbon dioxide.
Molecular Physics | Thermodynamics
How long will it take a 50 watts heater to melt 100 g of ice at 0 C
Molecular Physics | Thermodynamics
Supposing a bridge is built from pieces of 4.46m long newly fabricated metal of linear expansivity 9.5×10^-6. If the gaps between the metals are 5.18mm on a day with temperature 15C, at what temperature will the pieces of metal begin to touch one another?
Molecular Physics | Thermodynamics
Oxygen gas having volume of 500cm3 at 27 degree and pressure of 8.31Pa .expands until its volume becomes 1.0m3 and its pressure 10Pa.Find the mass in moles of oxygen and its final temperature.
Molecular Physics | Thermodynamics
an ideal monatomic gas expands adiabatically from a state with pressure 8.1x10^5 Pa and volume 2.5x10^-3 m^3 to a state of volume 4.6x10^-3 m^3, calculate the new pressure of the gas
Molecular Physics | Thermodynamics
a brass ring has a diameter of 20cm when placed in melting ice at 0°Celsius. what will it's diameter be if it is placed in a boiling water?
Molecular Physics | Thermodynamics
Work out the specific heat capacity of a substance if it takes 5200J of energy to heat 2kg of it from 42°C to 47°C.
Molecular Physics | Thermodynamics
Define adiabatic lapse rate and show that
dT/dh= {(–γ–1)/γ} (Mg/R)
Plot a graph between atmospheric temperature with altitude.
dT/dh= {(–γ–1)/γ} (Mg/R)
Plot a graph between atmospheric temperature with altitude.
Molecular Physics | Thermodynamics
For a Bose-Einstein system, the expression for the thermodynamic probability is:
W=π{(gi+Ni–1)!/(Ni !(gi–1)!)}
Derive an expression for the Bose-Einstein distribution function.
W=π{(gi+Ni–1)!/(Ni !(gi–1)!)}
Derive an expression for the Bose-Einstein distribution function.
Molecular Physics | Thermodynamics
1: Efficient Engineer
An engineer is given the task to extract the maximum work out of two bodies A and B whose
heat capacities are CA and CB respectively. They are kept at temperatures TA and TB ( in
Kelvin scale). The engineer first tries to put these two bodies in contact.
(a) What would be the amount of work extracted during this process?
The engineer then tries to design an engine to get the best output ( work ) from this situation.
(b) What in your opinion would be the best method to achieve this goal?
(c) Find the value of the parameter for this ”engine” that will guarantee that the work is
extracted in the method is indeed maximum.
An engineer is given the task to extract the maximum work out of two bodies A and B whose
heat capacities are CA and CB respectively. They are kept at temperatures TA and TB ( in
Kelvin scale). The engineer first tries to put these two bodies in contact.
(a) What would be the amount of work extracted during this process?
The engineer then tries to design an engine to get the best output ( work ) from this situation.
(b) What in your opinion would be the best method to achieve this goal?
(c) Find the value of the parameter for this ”engine” that will guarantee that the work is
extracted in the method is indeed maximum.
