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1. Steam enters the turbine of a power plant at 200. psia, 500.°F. How much will the Carnot cycle thermal efficiency increase if the condenser pressure is lowered from 14.7 to 1.00 psia?
2. Steam enters the piston cylinder of a Newcomen cycle steam engine at 14.7 psia, 212°F and condenses at 6.00 psia. Plot the thermal efficiency of the reversible cycle vs. the average cylinder wall temperature over the range 170.°F ≤ (Tb)avg ≤ 212°F. Neglect the power used by the boiler feed pump.
In mid-nineteenth century England horses were often used to pull barges along canals. What is the average power
A magnetic field directed into the page-changes with time according to \(B = (0.05t^{2} + 0.4) T\) , where t is in s. The field has a circular cross-section of radius R = 0.05 m (Fig. 31.28). What are the magnitude and direction of the electric fi..
If 7.50 kg of ice at -5.00°C is added to 12.0 kg of water at 15°C, compute the final temperature. T = 0 C, How much ice remains, if any
Assume that a 90.0 W light bulb radiates all its energy as a single wavelength of visible light. Estimate the magnetic field strength at the surface of the bulb
What should the charge (sign and magnitude) of a particle of mass 1.487 be for it to remain stationary while placed in a downward-directed electric field of magnitude 630.
mass of copper deposited in copper voltameter during the same period
A quantity of gas in a piston cylinder has a volume of 0.544 m3 and a pressure of 200 Pa. The piston compresses the gas to 0.126 m3 in an isothermal (constant-temperature) process. What is the final pressure of the gas? Pa A periodic wave has a frequ..
a 20-nc point charge is placed on the x axis at x 2.0 m and a -25-nc point charge is placed on the y axis at y -3.0m.
Three text books are stacked on the table, the math book has a mass of 0.5 kg, the English book has a mass of 1.0 kg and the Physics book has a mass of 1.5 kg. What is the normal force acting on the Physics book
An object is moving with radial acceleration of 6 m/s^2 and tangential acceleration of 8 m/s^2. The magnitude of the total acceleration vector is:
A string under a tension of 58.5 N is used to whirl a rock in a horizontal circle of radius 2.75 m at a speed of 20.5 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
a carnot cycle operates between source and sink temperatures of 250c and -15c. if the system receives 90 kj from the
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