During a steady flow process, the pressure ofthe working substance drops from 200 to 20psia, the speed increases from 300 to1500ft/s, the internal energy of the opensystem decreases 25 BTU/lb, and the specificvolume increases from 1 to 8 ft3/lb. heat islost by 10 BTU/lb. what is the kinetic energy inpoint 1 and 2, and flow work in point 1 and 2?

Answered: Image /qna-images/answer/2bd4476a-51f7-47c3-94bf-f65333056f65.jpg

Answered: During a steady flow process, the…

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

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A fluid is heated reversibly at a constant pressure of 1.05 bar until it has a specific volume of 0.1 m'/kg. It is then compressed reversibly according to a law pu = constant to a pressure of 4.2 bar, then allowed to expand reversibly according to a law pel.- constant, and is finally heated at constant volume back to the initial conditions. The work done in the constant pressure process is -515 N m, and the mass of fluid present is 0.2 kg. Calculate the net work of the cycle and sketch the cycle on a p-v diagram.
During a process, a system receives energy by heat transfer of 35 J, loses energy by heat transfer of 5 J, does work of 25 J, and work is done on the system of 15 J. What is the total energy change of the system in J?
6
Ice is added to hot tea in a thermos and then, the thermos is closed. The energy loses through the thermos lid and walls are negligible. After a while, the system including ice and water reached thermal equilibrium. In this process, the total energy of the system.. O Increased O Decreased O did not change
The figure belows shows an object whose mass is 5 lb attached to a rope wound around a pulley. The radius of the pulley is R = 11 in. R Pulley m V=5 ft/s If the mass falls at a constant velocity of 5 ft/s, determine the power transmitted to the pulley, in hp, and the rotational speed of the shaft, in revolutions per minute (RPM). The acceleration of gravity is 32.2 ft/s²
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Ice is added to hot tea in a thermos and then, the thermos is closed. The energy loses through the thermos lid and walls are negligible. When the system including ice and water reached thermal equilibrium, the energy of ice increased by 10 J. How did the energy of water change? O Unknown O Did not change O Increased by 10J O Reduced by 10J
One third of a kilogram of a gas contained within a piston-cylinder undergoes a process at constant pressure at 400 kPa. The initial specific volume is 0.72 m^3/kg. The work for the gas in the system is -100 kJ/kg. Determine the final volume of the gas in m^3
There is a piston-cylinder system that undergoes a process. The total work done by the system, W, is 50 kJ, and thechange in the specific internal energy of the system, Δu, is −7 kJ/kg. We also know the total mass of the system, m, is 10kg. During the process, both the change of kinetic energy and the change of potential energy are negligible. Pleasedetermine 1) the total energy change, ΔE, in kJ; 2) the total heat transfer, Q, in kJ; and 3) judge the direction of energyflow for the heat transfer: into the system or out of the system.
Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant pressure of 3 bar. The volume initially is 0.01 m3 and finally is 0.03 m3; the initial temperature is 18.25 0C. Calculate the mass of oxygen with the correct unit to four decimal places. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0 . 9 1 7 k J / k g K and molar gas constant as = 8,314 J / kmol K
Krypton in a closed system is compressed adiabatically from 74 K and 1 bar to a final pressure of 24 bar. What is the final temperature in K? Assume krypton is an ideal gas. From Appendix B in the text, we can assume the heat capacity of krypton is independent of temperature and CP=2.5R , where R is the molar gas constant R=8.314 J/(mol K). For an ideal gas, recall CV=CP−R=1.5R. Report your answer in units of K using three decimal places.
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