9.One kg of nitrogen contained in a cylinder at a pressure of 7bar and temperature of 300k expands 4 times of its original volume. The process of expansion is assumed to take place at constant pressure. Calculate Initial volume b) Final temperature c) Work done d) Heat added. e) Change in internal energy. For nitrogen assume, =1.045KJ/kgK, R=296KJ/kgK. Ср

9.One kg of nitrogen contained in a cylinder at a pressure of 7bar and temperature of 300k expands 4 times of its original volume. The process of expansion is assumed to take place at constant pressure. Calculate Initial volume b) Final temperature c) Work done d) Heat added. e) Change in internal energy. For nitrogen assume, =1.045KJ/kgK, R=296KJ/kgK. Ср

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

solve. heat transfer
(d) The rate of heat generated, Btu/min
3. Steam enter a turbine with an enthalpy of 1292 Btu/lb anf leaves with an enthalpy of 1098 Btu/lb. The transferred heat is 13 BTU/lb. What is the work in BTU/min an in h for a flow of 2 lb/sec? 3 decimal in final answer pls
1.The quality of heat is independent of its temperature. We note that the quality of energy means the availability of work. A.(True) B.(Fale)
A gas is compressed from an initial volume of 5.75 LL to a final volume of 1.24 LL by an external pressure of 1.00 barbar . During the compression, the gas releases 125 JJ of heat. What is the change in internal energy of the gas?
A piston-cylinder arrangement contains water at 110°C, 85% quality with a volume of 1 L. What is the initial mass, in grams? The system is heated, causing the 150-mm-diameter piston to rise and encounter a linear spring with k = 800 kN/m. Calculate the specific internal energy (kJ/kg) at this instant knowing that the measured volume is 1.65 L. The heating continues and compresses the spring in the process. When the piston encounters the stops, the pressure is 200 kPa. What is the temperature (in °C) and entropy (in J/K) at this point? Heating continues until the pressure reached 300 kPa. What is the volume, in L at this instant? Illustrate the process in separate P-v and T-v diagram. Note:1000 L = 1m3. Hint: Draw the FBD of the piston in each state.
Rotational kinetic energy is yet another mass-dependent engineering quantity. An object having a mass moment of inertia I and rotating with angular speed of ? (rad/s) has a rotational kinetic energy, which is equal to 1/2I?2. Consider a cylindrical stainless steel shaft that is 3 ft long and has a diameter of 9 in. What is the volume of the stainless steel shaft (in ft3)? What is the density of stainless steel (in kg/m3)? (See the table below.) Density, Specific Gravity, and Specific Weight of Some Materials (at room temperature or at the specified temperature) Material Density (kg/m3) Specific Gravity Specific Weight (N/m3) Solids Aluminum 2,740 2.74 26,880 Asphalt 2,110 2.11 20,700 Cement 1,920 1.92 18,840 Clay 1,000 1.00 9,810 Fireclay Brick 1,790 @ 100°C 1.79 17,560 Glass (soda lime) 2,470 2.47 24,230 Glass (Lead) 4,280 4.28 41,990 Glass (Pyrex) 2,230 2.23 21,880 Iron (Cast) 7,210 7.21 70,730 Iron (Wrought) 7,700 @ 100°C 7.70 75,540 Paper 930 0.93…
A-3.2. Suppose a large tank of water with a temperature of just over 0 Cwe put in a 100 g ice cube. When the ice melts, it absorbs 33 kJ of heat. What is theentropy change of a) (ice) system, b) environment (water tank)?
The laptop consumed a total of 20 kW per month. This is equivalent to how many BTU/hr?
3.00 molesof an ideal gas expands irreversibly from a pressure of 2.4 bars to a pressure of 0.15 bars, with its initial and final temperatures both at T= 300 K. No work is done in this process (you can imagine that it is a free expansion into an evacuated space, if you wish). Compute the following features of this process. (a) The initial and final volumes, and the change in volume for the gas, DV(in L). (b) DG(in kJ)(You should compute DSas part of this evaluation.) (c) DA(in kJ)
Due to Global Warming, the average temperature of the world increased by ______________
A frictionless, freely moving piston-cylinder assembly with a mass of 85 kg and a cross-sectional area of 0.05 m2 is located at an atmospheric pressure of 97 kPa. The initial volume of the piston is 8.9 liters and contains 0.008 kg of air. Then, the volume is halved with the heat transfer from the piston-cylinder assembly to the environment. According to this; a) Calculate the final pressure of the container (kPa) in (bar), and its temperature in (K),b) Boundary work (kj),c) Calculate the amount of heat transfer to the environment (kj).R= 0.287 kj/kg K, g=9.81 m/s 2 (You can use other data from Thermodynamic Tables, Table 17 for air.)