piston, on which rests a weight.. A gas is confined in a 1.25(ft) diameter cylinder by aThe mass of the piston and weight together is 250(lb.m). The local acceleration of grav-ity is 32.169(ft)(s)-, and atmospheric pressure is 30.12(in Hg).(a) What is the force in (lbf) exerted on the gas by the atmosphere, the piston, and theweight, assuming no friction between the piston and cylinder?(b) What is the pressure of the gas in (psia)?(c) If the gas in the cylinder is heated, it expands, pushing the piston and weightupward. If the piston and weight are raised 1.7(ft), what is the work done by thegas in (ft)(lbf)? What is the change in potential energy of the piston and weight?7SLLmALH B60N pe0UG VCl1P0DUG0t

Answered: Image /qna-images/answer/fd9954e6-a26c-484d-9d37-b001d9b68f77.jpg

Answered: piston, on which rests a weight. . A…

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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none m_cv2-m_cv1=m_in-m_out For ideal gases, .. is a function of temperature only specific volume none pressure density internal energy The quality of the fluid is 20%. Its internal energy at saturated liquid state is 200 3Jikg and saturated vapor state is 900 kJ/kg. Determine its internal energy?
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P1.4 A gas is contained in a cylinder behind a frictionless piston of diameter 0.1 m and mass 25 kg. When an additional mass M is placed on the piston the gage pressure of the gas becomes 2.0 bar. The local barometric pressure is 775 mm of mercury. (a) Calculate (i) the mass of M and (ii) the absolute pressure of the gas in the cylinder. (b) The piston is held in this position with the aid of a lock on the outside while heat is supplied to the gas until its absolute pressure becomes 4 bar. Calculate the force on the lock in the final equilibrium state. [Answers: (a) (i) 135 kg, (ii) 3.034 bar, (b) 758 N]
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1. Pressures up to 3000 bar are measured with a dead-weight gauge. The piston diameter is 4 mm. What is the approximate mass in kg of the weights required? 2. A gas is confined in a 0.47 m diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together is 150 kg. The local acceleration of gravity is 9.813 m's-2, and atmospheric pressure is 101.57 kPa. (a) What is the force in newtons exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder? (b) What is the pressure of the gas in kPa? (c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 0.83 m, what is the work done by the gas in kJ? What is the change in potential energy of the piston and weight? 3. Steam at 1400 kPa and 350°C [state 1] enters a turbine through a pipe that is 8 cm in diameter, at a mass flow rate of 0.1 kg: s-1. The exhaust from the turbine is…
Patm 1. Initially; the piston sits on the stops and the linear spring exerts no force, the specific volume is 0.05 m /kg and the pressure is 125 kPa. Atmospheric pressure is 100 kPa, mass of the piston is 102 kg, and area of the piston is 200 cm?. The linear spring exerts a force on the piston in such a way that the specific volume becomes 0.08 m'/kg when the pressure reaches 200 kPa. Heat is transferred to the water until its temperature is 115 °C. Calculate work and heat transfer, showing the process on a P-v plot. Hint: In the final stage, the temperature is 115°C, but the pressure is not given. You need to find P and v using the tables and P-v plot.

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