3. A closed system of mass 10 kg undergoes a process during which there is energy transfer bywork from the system of 0.147 kJ per kg, an elevation decrease of 50 m, and an increase invelocity from 15 m/s to 30 m/s. The specific internal energy decreases by 5 kJ/kg and theacceleration of gravity is constant at 9.7 m/s2. Determine the heat transfer for theprocess,inkJ.

Given: Mass, m = 10 kg Work done by system, w = 0.147 kJ/kg Elevation, Δh = - 50m (negative because…

Answered: 3. A closed system of mass 10 kg…

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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An object whose mass is 90 lb is projected straight upward from the surface of the earth and reaches a height of 900 ft when its velocity reaches zero. The only force acting on the object is the force of gravity. The acceleration of gravity is g = 32.2 ft/s². Determine the initial kinetic energy of the object, in ft-lbf, and the initial velocity of the object, in ft/s. Step 1 Determine the initial kinetic energy of the object, in ft-lb₁. KE= i ft-lbf
A closed system consists of gas of 2 kg initially in state 1 with p1 4bar and specific volume V1 = 1m /kg. The system undergoes a power cycle consisting of the following processes: Process 1-2: polytropic process to v2 = 2m3 /kg, p2 = 1bar; Process 2-3: isobaric compression to v1; Process 3-1: isochoric process to p1. Draw the cycle on a p – v (specific volume) diagram. Show the system states, cycle direction, and the cycle (net) work.
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An object whose mass is 90 lb is projected straight upward from the surface of the earth and reaches a height of 900 ft when its velocity reaches zero. The only force acting on the object is the force of gravity. The acceleration of gravity is g = 32.2 ft/s?. Determine the initial kinetic energy of the object, in ft-lbf, and the initial velocity of the object, in ft/s.
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Five lbs of propane is contained in a closed, rigid tank initially at 80 lbf/in.2, 50°F. Heat transfer occurs until the final temperature in the tank is 0°F. Kinetic and potential energy effects are negligible. Determine the amount of energy transfer by heat, in Btu. Q= i Btu
A gas in a piston-cylinder assembly undergoes a process during which its volume reduces from 2 m to 1 m°. During this process, the system specific volume does not change O increases twice O reduces twice
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