Q6/Air is enclosed by a rigid cylinder con-taining a piston. A pressure gage attached to thecylinder indicates an initial reading of 25 psi. De-termine the reading on the gage when the pistonhas compressed the air to one-third its originalvolume. Assume the compression process to beisothermal and the local atmospheric pressure tobe 14.7 psi.

Introduction The temperature remains constant from the beginning to the end of the isothermal…

Answered: Air is enclosed by a rigid cylinder…

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 mercury manometer is used to measure the pressure difference between pipes A and B. Oil (specific weight = 8.33 kN/m³) is flowing in pipe A and mineral oil (specific weight = 8.96 kN/m³) is flowing in pipe B. An air pocket is entrapped in the mineral oil as shown. Determine the pressure in pipe B if the pressure in pipe A is 105.5 kPa.
Suppose a gas-filled incandescent light bulb is manufactured so that the gas inside the bulb is at atmospheric pressure (1 atm = 1.013 × 105 Pa) when the bulb has a temperature of 20.0 °C. Find the gauge pressure inside such a bulb when it is hot, assuming its average hot temperature is 75.0 °C. gauge pressure when hot: 1.87 X104 Incorrect The actual final pressure of the light bulb will be different than calculated in the first question because the glass bulb will expand. What will the final actual gauge pressure be, taking this into account? The volume expansion coefficient for glass is ß = 2.700 x 10-5 °C-1. final gauge pressure, accounting for glass expansion: 1.20 ×105 Pa Incorrect Pa
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1. A device for measuring the specific weight of a liquid consists of a U-tube manometer as shown. The manometer tube has an internal diameter of 0.5 cm and originally has water in it. Exactly 2 cm³ of unknown liquid is then poured into one leg of the manometer, and a displacement of 5 cm is measured between the surfaces as shown. What is the specific weight of the unknown liquid? Answer: Y = 0.5 cm. T 5 cm ↓ Water
An air receiver carries a pressure of 3500 kPa absolute @ a temperature of 25 C. A fire occurs near the receiver which causes the temperature to rise to 80 C. Neglecting the increased volume of the receiver due to expansion, calculate the air pressure at this temperature.
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A compressor takes in refrigerant at a pressure of 80.34 psia. The dischargepressure of the refrigerant is 281.74 psia. What is the compression ratio ofthe compressor? Round the answer to the nearer tenth.
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A cylinder of radius 0.17 m and height 0.71 m stands vertically and contains an oil with a density of 832.6 kg/m^3. The cylinder is sealed on one end by a moveable piston of mass 3.00 kg. An additional mass of 15.9 kg is placed on top of the moveable piston. Determine the resulting gauge pressure the oil in the bottom of the cylinder. Express your answer in PSI. (1 PSI = 6894.76 Pa)
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