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Warm air is contained in a piston-cylinder assembly oriented horizontally as shown below. The air cools slowly from an initial volume of 0.003 m3 to a final volume of 0.002 m3. During the process, the spring exerts a force that varies linearly from an initial value of 900 N to a final value of zero. The atmospheric pressure is 100 kPa, and the area of the piston face is 0.018 m2. Friction between the piston and the cylinder wall can be neglected. For the air, determine the initial and final pressures, in kPa, and the work, in kJ.
Write the electron configuration of the following ions by using spdf notation.
Write a short technical report on Frequency Division Multiplexing
A compressor operating adiabatically is to compress 2.83 m^3/min of air at 29.4C and 102.7 kN/m^2 to 311.6kN/m^2. Calculate the power required if the efficiency of the compressor is 75%. Also, calculate the outlet temperature.
An Industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance force applied to a 2in diameter axle. What is the required actual mechanical advantage of the system?
Superheated water vapour at 180 psia and 500 degrees Farenheit is allowed to cool at a constant volume until the temperature drops to 250 degrees Farenheit. At the final state, determine
Determine the factor of safety against net section yield in the presence of the crack and determine the factor of safety against brittle fracture for the same conditions.
If after 49.5 h the concentration of carbon is 0.35 wt% at a position 4.0 mm below the surface, determine the temperature at which the treatment was carried out.
Show how did you do the maintenance during your workshop
two 20mm steel plates are welded to a rolled S section as shown. Determine the moments of inertia and the radii of gyration of the combined section with respect to the centroidal x and y axes.
You are designing a remote-area power supply based on a miniature wind turbine that is 20% efficient. Meteorological data indicates an average wind speed of 24 km/h at an air temperature of 10oC and pressure of 0.9 atm. The rotor has a diameter of..
Air enters a 0.6 m diameter fan at 16 deg C, 101 kPa, and is discharged at 18 deg C, 105 kPa, with a volumetric flow rate of 0.35 m^3/s.
Estimating fractions of a cost, Estimate what fraction of the price of a pocket calculator is required to cover the cost of developing the product.
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