3. A lm nitrogen gas was placed inside a piston cylinder arrangement with initial state at 200kPa and gas was expanded to 150 kPa. Determine the change in internal energy and enthalpy, work and he if process is done a. isothermally b. isentropically c. polytropically at n= -1

3. A lm nitrogen gas was placed inside a piston cylinder arrangement with initial state at 200kPa and gas was expanded to 150 kPa. Determine the change in internal energy and enthalpy, work and he if process is done a. isothermally b. isentropically c. polytropically at n= -1

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

An ideal monatomic gas made up of N atoms is held in a container with a movable piston. In a reversible isothermal, that is at constant temperature T, expansion of the gas from a volume of V; to Vf (Vi > Vi), a) What is the change in the (internal) energy of the gas? Is it positive or negative? b) How much work does the gas do? Is it positive or negative? c) How much heat has been transferred to the gas? Is it positive or negative? Has heat been transferred into or out of the gas? d) Show that the 1st law of thermodynamics is satisfied.
A 60-liter rigid tank with adiabatic walls is divided into equal parts A and B by partition. On one side is steam at 0.60 MPa, 200°C; on the other side is steam at 4 MPa, 350-C. Find the specific volume of the resulting mixture. A. 0.1050 m³/kg B. 0.1118 m³/kg C. 0.1542 m³/kg D. 0.4330 m³/kg
A vessel of water containing 300 kg of water is initially at 270 K. A 100 kg piece of metal,initially at 1300 K, is placed in the water vessel to cool and the vessel is closed. The specificheat of the metal is 0.6 kJ/kg K and 4.2 kJ/kg K for water. Assume the specific heats areconstant and that the vessel is well insulated.a. Find the final equilibrium temperature after cooling. b. Find the amount of entropy generated within the vessel in kJ/K.
One kilogram of water at 500◦C and 1 kg of saturated water vapor, both at 200 kPa, are mixed in a constant-pressure adiabatic process. Find the final temperature and the entropy generation for the process. 312.2°C and 0.225 kJ/K PLEASE ATTACH THE WHOLE PROCESS IT WILL BE A BIG HELP FOR ME. THANK YOU!
This is an Isothermal Compression of Ammonia [not an ideal gas] Ammonia in a piston-cylinder device initially at 700kPa, 303K undergoes a reversible isothermal compression process until the volume is reduced to 25% of the initial volume. a) Draw the process T-s and p-v-diagrams, relative to saturation lines. b) What is the heat and work per unit mass?
Steam is bled from a turbine to supply 2 MW of process heat in a chemical plant at 200 °C, as shown in the schematic, so that state 4 is saturated Part A liquid water at 200 °C. At the turbine inlet, (state- 1) steam is at 5 MPa , 500 °C and at the turbine exit the pressure is 10 kPa. (Figure 1) Determine the quality of steam at the turbine exit. Express your answer to two significant figures. Πν ΑΣ φ vec Submit Request Answer Part B Determine the bleed pressure (assume no frictional losses). Express your answer to three significant figures. Πν ΑΣ φ vec ? MPа Submit Request Answer Part C Determine the bleed rate. Express your answer to three significant figures. ΑΣφ vec ? kg/s Submit Request Answer Figure 1 of 1 Turbine Part D output Determine the mass flow rate (m) at the turbine inlet if the power output is 2 MW Express your answer to three significant figures. Process heat ΑΣΦ vec ? kg/s
9. Helium is compressed in an adiabatic cylinder from 70°F, 10 ft³, 15 psia to 1 ft³ according to the relation pVK = c. Find the work nonflow, the final temperature and the change of enthalpy.
In the boiler of a steam engine the superheated steam is at 500 degrees Celsius and 20 mPa is created by adding an amount of heat to the pressured water. Erros up to 10% have come up. Find the ideal gas law. Could the error seen in testing be due to the ideal gas law assumption? - value from the ideal gas law - value from tables - %Error Which of the above values is the most accurate? Could the error seen in testing be due to the ideal gas law assumption?
2) Two glass bulbs, one on the left with a volume of 2 liters and the other on the right with avolume of 6 liters, are connected to one another by a thin tube that is initially closed by astopcock. The bulb on the left has 0.1 moles of ideal gas, and the bulb on the right isevacuated. The system is in thermal equilibrium with the surroundings at 300K. When thestopcock is opened, the gas flows out to fill both bulbs. Calculate A for this process. If wewere to insert a propeller to extract work as the gas flows from left to right, what is themaximum amount of work that we could possibly extract?
A flow of 2 kg/s completely dry air at T1, 100 kPa is cooled down to 10°C by spraying liquid water at 10°C, 100 kPa into it so it becomes saturated moist air at 10°C. The process is steady-state with no external heat transfer or work. Find the exit moist air humidity ratio and the flow rate of liquid water. Find also the dry air inlet temperature T1.
Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 134L of air at 2,639.66 kPa, 87.38°C. Vessel B, of unknown volume, contains air at 69.36 kPa, 6.33°C. The valve is opened and, when the properties have been determined, it is found that Pm = 1,041.50 kPa, tm = 46.30°C. What is the volume of vessel B?
For a volume of air cooled from 1000 CFM at 98F DB and 50% RH to 70F DB and 90% RH give the following: a. Total heat removed b. Sensible heat removed c. Latent heat removed d. Amount of water removed per hour in (LB/HR)