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An Instructor’s Solutions Manual to Accompany Fundamentals of Chemical Engineering Thermodynamics [EXP-5137]

327 SOLVED PROBLEMS

(a) Assume the spatial distribution of the current on a very thin centerfed half-wave dipole lying along the z-axis to be I0 cos 2πz . Find the charge distribution on the dipole. What is the wavelength? (b) Repeat part (a), assuming the current distribution along the dipole to be a triangular function

Verified Answer:

Equation of continuity: \overline { \nabla ...

(a) Plot the wave impedances for an air-filled waveguide versus the ratio ( f/fc ) for TM and TE modes. (b) Compare the value of ZTM and ZTE at f=1.1 fc and 2.2 fc

Verified Answer:

We use Eqs(9-34) and (9-39) for { Z }_{ TM ...
Question: 3.26

1 kg of nitrogen is contained in a piston-cylinder device.The nitrogen is isothermally compressed from P = 1 bar to P = 10 bar at T = 250 K. In questions A and B, find the initial volume, final volume, and work and heat added to, or removed from, the nitrogen.A) Assume nitrogen behaves as an ideal

Verified Answer:

A)  \begin{aligned}& \mathrm{V}_{\text ...
Question: 3.18

10 mol/s of gas enters a steady state, adiabatic nozzle at T = 300°C and P = 5 bar and leaves at T = 100°C and P = 1 bar. Find the exiting velocity of the gas if it is: A) Steam B) Nitrogen, modeled as an ideal gas C) An ideal gas with CP = (7/2)R and a molecular mass of 28 g/mol

Verified Answer:

Set up an energy balance around the nozzle. [latex...
Question: 2.11

10 mol/s of gas flow through a turbine. Find the change in enthalpy that the gas experiences: A) The gas is steam, with an inlet temperature and pressure T = 600° and P = 10 bar, and an outlet temperature and pressure T = 400°C and P = 1 bar. Use the steam tables. B) The gas is steam, with the same

Verified Answer:

A) Using the steam tables; Steam at 600^{\c...
Question: 1.21

100 kg of steam is enclosed in a piston-cylinder device, initially at 300°C and 5 bar. It expands and cools to 200°C and 1 bar. A) What is the change in internal energy of the steam in this process? B) If the external pressure is constant at 1 bar, how much work was done by the steam on the

Verified Answer:

Define the gas as the system. A) From steam tables...
Question: 7.8

120 lbm of liquefied natural gas (LNG) are stored in a rigid, sealed 6 ft³ vessel. In this problem, model LNG as 100% methane. Due to a failure in the cooling/insulation system, the temperature increases to –100°F, which is above the critical temperature; thus the natural gas will no longer be in

Verified Answer:

Useful in several parts of the problem are the num...
Question: 3.27

20 lb-mol/min of the compound enters a steady-state boiler as saturated liquid at P = 1 bar. Find the rate at which heat is added if the exiting stream is: A) Saturated vapor at P = 1 bar. B) Vapor at P = 1 bar and T = 200°F. C) Vapor at P = 0.7 bar and T = 200°F

Verified Answer:

A) Set an energy balance around the boiler [latex...
Question: 7.25

5 moles per second of n-butane enter a turbine at P=15 bar and T=500 K and leave the turbine at P=1 bar. The turbine has an efficiency of 80%. Find the rate at which work is done using the following methods: A) The Lee-Kesler approach. B) The Peng-Robinson equation of state.

Verified Answer:

A) Throughout the solution we will use “2” to indi...

A 1-(GHz) Doppler radar on the ground is used to determine the location and speed of an approaching airplane. Assuming that the signal reflected from the airplane at an elevation angle of 15.5° showed a time delay of 0.3 (ms) and a frequency shift of 2.64 (kHz), find the distance, height, and speed

Verified Answer:

\Delta t=\frac { 2R }{ c } =0.3\times { 10 ...
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