A vertically arranged piston-cylinder assembly with a mass and area of a piston given as 44 kg and 0.0088 m2, respectively is filled with 3.2 g of carbon dioxide (CO2). The initial volume and specific internal energy of the gas are 0.0048 m3 and 623 kJ/kg, respectively. The piston is exposed to the atmosphere and pressure of 104 kPa is exerted on the top of the piston by the atmosphere. The volume of the gas has decreased to 0.0024 m3 when 1.84 kJ heat is transferred slowly from the gas to the surrounding. (a) the pressure, in kPa, and (b) the final specific internal energy, in kJ/kg

A vertically arranged piston-cylinder assembly with a mass and area of a piston given as 44 kg and 0.0088 m2, respectively is filled with 3.2 g of carbon dioxide (CO2). The initial volume and specific internal energy of the gas are 0.0048 m3 and 623 kJ/kg, respectively. The piston is exposed to the atmosphere and pressure of 104 kPa is exerted on the top of the piston by the atmosphere. The volume of the gas has decreased to 0.0024 m3 when 1.84 kJ heat is transferred slowly from the gas to the surrounding. (a) the pressure, in kPa, and (b) the final specific internal energy, in kJ/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

See similar textbooks

Similar questions

1. Oxygen at 30°C and 300 kPa absolute pressure expands isotherrnally to an absolute pressure of 120 kPa. Determine the final density of the gas. Ans. 1.52 kg/m³ 2. Air is enclosed by a rigid cylinder containing a piston. A pressure gage attached to the cylinder indicates an initial reading of 25 psi. Determine the reading on the gage when the piston has compressed the air to one-third its original volume. Assume the compression process to be isothermal and the local atmospheric pressure to be 14.7 psi. Ans. 104 psig 3. The viscosity of liquids can be measured through the use of a rotating cylinder viscometer of the type illustrated in Fig. P1.3. In this device the outer cylinder is fixed and the inner cylinder is rotated with an angular velocity w. The torque T, required to develop w is measured and the viscosity is calculated from these two measurements. Develop an equation relating u, w, T, e, Ro and Ri. Neglect end effects and assume the velocity distribution in the gap is linear.…
A mass of 10 g of oxygen fill a weighted piston-cylinder device at 20 kPa and 94.0°C. The device is now cooled until the temperature is 0°C. Determine the change of the volume of the device during this cooling. The gas constant of oxygen is R = 0.2598 kPa.m³/kg-K. (Round the final answer to three decimal places.) The change of volume is m³.
A vertical, frictionless piston-cylinder assembly is filled with gas. The piston has a mass of 3.2 kg and a cross-sectional area of 35 cm². A compressed spring on the piston exerts a force of 150 N on the piston. Determine the pressure in the cylinder in kPa where the atmospheric pressure is 95 kPa.
A motorist equips his automobile tires with a relief-type valve so that the pressure inside the tire never will exceed 35psig. He starts a trip with a pressure of 29psig and a temperature of 73*F in the tires. During the long drive, the temperature of the air in the tires reaches 180*F. Each tire contains 0.25 kg of air. Determine (a) the mass of airescaping each tire, (b) the pressure of the tire when the temperature returns to 73*F.
What is the specific internal energy of water at 50°C with a specific enthalpy of 1500 kJ/kg? Report your answer to one decimal place using rounding.
A Block has the potential to produce up to 3000 MWh of geothermal energy when the project is developed to completion. In the region, the average geothermal temperature gradient is 20 °C/km, the maximum depth that can be reached using conventional drilling technology is 10 km, the average annual surface temperature is 25 °C and the rock under the surface in that region has a density of 2600 kg/m3 and a specific heat of 1000 J/kg.K. Determine the minimum mass of rock required to meet this demand.
In a turbine 1,308 kW is produced by expanding an exhaust gas entering at 2.2 MPa and 662 K to a final pressure of 154 kPa. The inlet area of the turbine is The inlet area of the device is 0.2 m2 and the gas velocity at inlet is 25 m/s and at outlet is 51 m/s. Determine the specific volume at outlet in m3/kg to 2 decimal places. Assume the gas constant to be 0.26 (kPa m3)/(kg K) and constant specific heats cp=1.01 kJ/(kg K) and cv=0.75 kJ/(kg K).
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.
A vertically arranged piston-cylinder assembly with a mass and area of a piston given as 57 kg and 0.0106 m?, respectively is filled with 4 g of carbon dioxide (CO,). The initial volume and specific internal energy of the gas are 0.0047 m and 604 kJ/kg, respectively. The piston is exposed to the atmosphere and pressure of 100 kPa is exerted on the top of the piston by the atmosphere. The volume of the gas has decreased to 0.0024m when 2 kJ heat is transferred slowly from the gas to the surrounding (a) the pressure, in kPa, and (b) the final specific internal energy, in kJ/kg Assume: The local gravitational acceleration to be 9.81 m/s? Friction between the piston and the cylinder is neglected.
An oxygen tank has a volume of V = 3.00 m3. The gage pressure of oxygen in the tank is Pgage = 400.00 kPa. The room temperature is T = 27.00 ˚C and the atmospheric pressure is Patm = 100.00 kpa. The gas constant of oxygen is R = 0.25980 kPa/(kg·K). Oxygen can be treated as an ideal gas. Determine (2) the mass of oxygen, m =_____ kg
A spring exerts a force of 17 lbf on a piston inside a piston cylinder device. The mass of the piston is 3.5 lbs and the cross sectional area of it is 0.00018 ft^2. Determine the pressure inside the piston cylinder device.
During processing in a steel mill, a 375kg steel casting at 800 degrees is quenched by plunging it into a 500-gal oil bath, which is initially 75 degrees . After the casting cools and the oil bath warms , what is the final tempertature of the two? The weight per unit volume of the oil is 7.5 lb/gal.