Answered: Apply the conservation of mass…

Engineering

Mechanical Engineering

Apply the conservation of mass principle to various systems including steady- and unsteadyflow control volumes.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Steam enters a turbine through a duct with a diameter of 0.5 m at 10 MPa , 600 °, and 100 m/s. It exits the turbine through a duct with a diameter of 1 m at 400 kPa and 200 Part A For steady state operation, determine the exit velocity. Express the exit velocity in meters per second to three significant figures. ΑΣφ vec ? V2 = m/s Submit Request Answer Part B Determine the mass flow rate of steam through the turbine. Use the PC flow-state TESTcalc to obtain the density of steam at the inlet and exit ports. Express the exit velocity in kilograms per second to four significant figures. ΑΣφ več ? kg/s Submit Request Answer Part C What-if scenario: What is the exit velocity if the exit area is equal to the inlet area? Express the exit velocity in meters per second to six significant figures. ΑΣφ vec ? Submit Request Answer
A curious blacksmith forge 1 kg of iron then dropped it to an insulated container that contains 50 liters of water. Before dropping the iron into the insulated container, the blacksmith measures the temperature of iron and water as 500 °C and 20 °C, respectively. This curious blacksmith is always interested in thermodynamics and tries to calculate equilibrium temperature and the total entropy change because of his/her action. What will be the equilibrium temperature and the total entropy change? Is this process reversible or irreversible? (Density and specific heat of water at 20 °C are 995.10 kg/m3 and 4.16 kJ/kg.C, respectively. Assume that the specific heat capacity of iron is 0.5 kJ/kg.C)
A thermally well insulated, frictionless piston with initial volume V. contains 2.0 moles of an ideal gas. The temperature of the system at all time is T K. Then the piston is pulled until the volume of the gas is doubled. This expansion process is a reversible process. (a) Do the gas velocity distribution and internal energy of the gas change by the expansion? Justify your answer. (b) Determine the change in entropy of the gas.
A device with mass m = 0.21 kg. Contains gas Initially with specific volume v1= 0.84 m/kg ,P1=104 kPa , T1=295 K. Gas compressed to a V2= 0.25 m³/kg, P2=633 kPa , T2=433 K. The useful work input is W=180 kJ. Po=101kPa, To=289 K and vo= 0.84 m³/kg , determine Properties : R= 0.2871 kPa.m³/kg.K ( cp = 1.01 kJ/kg-K and Cy = 0.725KJ/kg-K The exergy state (1), X1 The exergy state (2), X2 The reversible work The second-law efficiency of the compressor
I need answer within 20 minutes please please with my best wishes
The entropy (s) of steam at pressure P = 18 MPa and internal energy (u) = 1699.1 kJ/kg is approximately: O 5.1064 kJ/kg. K O 1.2343 kJ/kg. K O 3.8720 kJ/kg. K
Answer all with solutions
SANAE |V, a research station of The South African National Antarctic Programme (SANAP), is located on Vesleskarvet, Queen Maud Land. On a given day, 29674 J of heat leaks out of a building. The inside temperature is 22.8 °C, and the outside temperature is -20.2 °C. What is the increase in the entropy of the universe that this heat loss produces?
Consider a reactor (combustor) in which fuel (CO) and oxidizer (H₂O) flow steadily. Both streams are separate and at standard conditions. The products CO₂ and H₂, a gaseous mixture, leaves at 500 K and 100 kPa. Both CO and H20 at inlet are in gaseous phase. The mass flow rate of CO is 2.8 kg/sec. The magnitude of heat transfer is (in MJ/sec) O 5.7 O 4.7 O 3.7 O 2.7 O 1.7
X=21
Ten lbm per min of fluid is handled in a reversible steady flow manner by a thermodynamic system located where the local g = 32 ft/s2. For the liquid, p1 = 20 psia, p2 = 80 psia, ρ1= 1.6 lbm/ft3, ρ2 = 0.32 lbm/ft3, v1 = 400 ft/s, v2 = 600 ft/s, u1 = 130 BTU/lbm, u2 = 130 BTU/lbm. During passage through the system, the fluid rejects 50 BTU/s as heat and rises 175 ft in elevation. During passage through the system, the fluid rejects 50 Btu/s as heat and rises 175 ft in elevation. Determine the work in the system, in BTU. Select one: a. – 675.2 b. – 781.8 c. 892.6 d. 987.4
Calculate the entropy changes that take place during processes for pure substances, incompressible substances, and ideal gases.