9) Which of the following is not the intensive property(a) pressure(b) temperature(c) density(d) heat(e) specific volume.10) What is the change in the internal energy of a gas during an adiabatic process?a) AU = -Wb) AU = Qc) AU = 0d) AU = -Qe) AU = W11) In a system undergoing adiabatic compression, what are the values of internal energy andheat if work done on the system is 3.5 kJ?a) Internal energy is 0 and heat is 3.5 kJb) Internal energy is 0 and heat is 3.5 kJc) Internal energy is 3.5 kJ and heat is 0 J

Answered: 9) Which of the following is not the…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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8. A sample of ideal gas has an internal energy (U) and is then compressed to one-half of its original volume while the temperature stays the same. What is the new internal energy of the ideal gas in terms of (U)? A) U B) 1/2U C) 1/4U D) 2U
a) Determine the density (p), specific gravity (SG), and mass (m) of the air in a room as shown in Figure 1 at 100 kPa and 25°C, if the gas constant of air is R = 0.287 kPa . m³/kg . K. 4 m ..... .. 5 m 6 m Figure 1 b) What is the pressure head in mmHg, exerted by the atmosphere?
A vessel contains steam at a pressure of 0.4 MPa and a dryness of 0.87. The contents of the vessel are heated. Assuming the dimensions of the vessel remain constant, determine:a) The pressure at which the steam becomes “dry-saturated”, i.e is in the saturated vapour phaseb) The temperature in cases a)c) The temperature of the steam when the pressure reaches 0.6 MPa Answers [0.465 MPa, 148.9 oC, 259.9 oC]
The 3 sides of a square plate shown in the figure below are kept at 0°C by fully insulating it, but the temperature of the bottom edge is desired to remain as f(x) = 100°C. For steady state, find the temperature value in the middle of the plate. T(5,5) = ? www a)76,1 b)30,6 c)50,7 d)25,4 e)40,5 У4 T=01 T=0 T=100 (10, 10) T=0 X
17 - Some water is compressed from 100 kPa to 5000 kPa at constant temperature. The initial density of water is 1000 kg/m³. Since the isothermal compressibility of water is α =4.8x10-5 atm-1, what will be the density change at the end of the compression process? a) 10.1 kg/m³ B) 7.4 kg/m³ NS) 10.5 kg/m³ D) 15.3 kg/m³ TO) 2.35 kg/m³
Ten ft^3 of air at 300 psia and 400°F is cooled to 140°F at constant volume. What are a) the final pressure b) work non flow c) change in internal energy d) Heat e) change in enthalpy f) change in entropy
A piston-cylinder device initially contains 500 liters of liquid water at 2.5 Mpaa and 200°C. Heat is added to the water at constant pressure until the entire liquid is vaporized. Determine: a) the mass of the water; b) the final temperature; c) the final volume; and d) the work done and the heat added. [Ans. a) 432.7 kg, b) 223.99°C, c) 34.6 m³, d) W = 85250 kJ, Q = 843894.8 kJ]
The pressure enclosed by the piston-cylinder system is P1, the atmospheric pressure is given by Patm, mass of the piston is mp, and the cross sectional area of the piston is A. The piston-cylinder force balance can be expressed as: A) P1 = Patm + mp A B) P1 = Patm C) P1A = PatmA + mp g D) P1A = PatmA
When a system is at steady state, its density can change (circle the right answer) a) only from one location to another within the system (in space), b) only with time, c) with time and in space, d) neither in time, nor in space.
A metal mug of thickness 2mm is 8cm in diameter and is filled with tea at 90°c to a depth of 10cm. If the ambient temperature is 20°c and the thermal conductivity of the mug is 50 W/mK, which of the following is the best estimate of how much heat the tea initially loses per second? A) 53KJ/S B) 0.88KJ/S 2.8KJ/s D) 1.4KJ/S
Thermodynamics

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