Molecular Physics | Thermodynamics Answers

 What are Newtonian and non-Newtonian fluids?

Consider a thermodynamic system consisting of 3 mol of an ideal gas occupying

0.03 m3

volume at 300 K temperature. Determine its initial pressure. For this

gas, γ=1.4. It undergoes the following processes:

i) It is compressed to 0.01 m3

volume isothermally. Determine the pressure of the

gas.

ii) then it is allowed to expand adiabatically, till it attains 1 atm pressure. Determine

the final volume. (1 atm = 101325 Nm-2

)

Draw a labeled indicator diagram of these processes.

b) A 20kg mass of Aluminum of specific heat Capacity OF 900kg /k was heated from 2k to 12k. Determine the

amount of heat Energy required

A container holding 0.25kg of steam at 140 degree Celsius, is placed in a freezer. How much energy is requires to get that steam to 140 degrees Celsius to ice of -25 c.

L(F) H20=332J/g

L(V)H20=2260J/g

C steam=1.996J/gc

C water=4.18J/gc

Cice=2.1J/g

The phase difference between two points on a progressive wave is 3𝜋/4

. What will be the

corresponding path difference?

. A compressed spring above the piston exerts a force of 60 N on the piston. If the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Two systems have thermodynamic probabilities of 3.0×10^27 and 1.8×10^28 respectively. Calculate the entropies of the individual systems and as well as their composite system and verify the boltzmann relation.

Four particle are to be distributed in 5 states. Calculate the number of ways in which this distribution can be done if the particles obey:

1) M-B statistics 2)B-E statistics.

1 kg of nitrogen (molar mass 28 kg/kmol) is compressed reversibly and isothermally from 1.01 bar , 20℃ to 4.2 bar. Calculate the work done and the heat flow during the process. Assume nitrogen to be a perfect gas.

A perfect gas has a molar mass of 26 kg/kmol and a value of 𝛾 = 1.26. Calculate the heat rejected when unit mass of the gas is contained in a rigid vessel at 3 bar and 315℃, and is then cooled until the pressure falls to 1.5 bar. Assuming that 𝐶𝑣 = 1.229 𝑘𝐽/𝑘𝑔𝐾 and 𝐶𝑝 = 1.548 𝑘𝐽/𝑘𝑔𝐾.