Molecular Physics | Thermodynamics Answers

A work done on the steady flow system is 30 kJ/kgm. Calculate the heat in HP

if the mass flow rate of fluid is 10 kg per minute given that the internal energy

is decreased by 10 kJ/kgm and the fluid flow is increased by 20 kJ/kgm. Also,

identify if the heat is added to the system or rejected by the system

Calculate the absolute pressure of the fluid in psi when its volume is at

1000 cubic inches per lbm given that the enthalpy of the fluid flow is

10 Btu/lbm and has an internal energy of 5 Btu/lbm

A gas on a piston cylinder has a constant pressure of 10 psig vacuum. The

piston undergoes expansion which makes the volume of the gas from 0.05 m3

to 0.10 m3. Calculate the non-flow work in kJ

 If 10 kg/min of air are compressed isothermally from P1=96kPa and V1=7.65m^3/min to P3=620kPa, find the work change of entropy and the heat for: a) nonflow process and b) steady flow process with v1=15m/s and v2=60m/s.

f 10 kg/min of air are compressed isothermally from P1=96kPa. Find the work change entropy and the heat for

(A) non flow process with v1=15m/s and v2=60m/s

Three pounds of perfect gas with R=38 ft.lb/lb.R and k= 1.667 have 300 Btu of heat added during a reversible nonflow constant pressure change of state. The initial temperature is 100 °F. Determine the

(A) final temperature

(B) change in heat ∆H

(C) W

(D) ∆U

(E) ∆S

A cylindrical drum 2-ft diameter and 4ft height is filled with fluid whose density is 40lb/ft^3.

Determine

(A) the total volume of

(B) its total mass in pounds and slugs

(C) its specific volume and

(D) its specific weight where g=31.90 fps^2

15 cubic ft of air at 300 psia and 420°F at constant volume. What are

(a) the final pressure

(b) the work

(c) the change of internal energy

(d) the transferred heat

(e) the change of enthalpy and

(f) the change entropy?

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity.

An oil (specific gravity = 0.75) with a depth of 10 m has a barometric reading of

755 mmHg. Calculate the absolute pressure in kPa