A closed, rigid tank fitted with a paddle wheel contains 0.1 kg of air, initially at 300 K, 0.1 MPa. The paddle wheel stirs the air for 20 minutes, with the power input varying with time according to W # 10t , where W # is in watts and t is time, in minutes. The final temperature of the air is 1060 K. Assuming ideal gas behavior and no change in kinetic or potential energy, determine for the air (a) the final pressure, in MPa, (b) the work, in kJ, and (c) the heat transfer, in kJ.
6/09/2017 Model 1: 1. Uncheck Auto-dimensioning before anything else 2. Draw a rough hexagon making the base parallel to the x-axis 3. Use rapid dimension to make the base of the hexagon and change it to 35mm 4. After that find the geometric constrains tool set and use the “equal length” tool and select all the sides of the hexagon except the base and then select the base of the hexagon that should be 35mm. 5. Using the “angular dimension” tool set any of the angle of the hexagon to be 120°, since you have the equal length constraint all the angles should change to 120°. 6. Finally draw a line from the right point of the base of the hexagon that is 50mm. You should end
