Molecular Physics | Thermodynamics Answers

A closed tank contains 0.5m of mercury density 13600 kg/m3 , 2m of water of density 1000 kg/m3 and 3m of oil of density 900 kg/m3 and there is an air space above the oil. The gauge pressure at the bottom of the tank is 200 kPa.

(i) Illustrate the stratification of the fluids under gravity with aid of diagram.

(ii) Determine the gauge pressure at the top of the tank.

What is the apparatus use to show that water is a poor conductor of heat

Consider a thermodynamics system consisting of 3 mol of an ideal gas occupying 0.03 m^3 volume at 300k temp. Determine its initial pressure. For this gas ,Y=1.4. It undegoes the following processes:

1.) It is compressed to 0.01 m^3 volume isothermally. Determine the pressure of the gas.

2.) Then it is allowed to expand adibatically, till it attains 1 atm pressure. Determine the final volume.(1atm=101325Nm^-2)

Draw a labelled indicator diagram of these processes.

14 The resistance ofa wire is given by

R= Roll+at+Bt?) PROBLEMS where is

the temperature in degrees Celsius

measured on the ideal gas scale and so

Ro is the resistance at the ice point. The

constants G and B are 3.8 x 10-%K and-

3.0x 106K respectively: Calculate the

tempera-ture on the resistance scale at

a temperature of 70*C on the ideal gas

Scale

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure.

the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10liter

calculate the net work done by the gas

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure.

the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10litre

Calculate

the energy expelled by the gas.

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure. the process A:B is a reversible isothermal expansion.

Given. P(A)=5atm V(A)=10litre

P(B)=1atm V(B)=50litre

P(C)=1atm V(C)=10litre

calculate the energy added to the gas.

one mole of an ideal monoatomic gas is taken through the cycle shown in the figure. the process A:B is a reversible isothermal expansion. calculate the net work done by the gas?

A car that travels at 6.3 km/hr for 2.0 hrs, at 5.7 for 1.0 hr and at 6.6 for half an hour. What is its average speed?

derive an expression for planck's law of blackbody radiation using this law of wien's displacement law and stefan boltzmann law