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A solar-powered Rankine cycle power plant uses 18.5 × 103 m2 of solar collectors. Refrigerant-22 is used as the working fluid at a flow rate of 1.00 kg/s and is transformed to a saturated vapor in the solar collectors (which function as the boiler) at a temperature of 40.0°C.
The condenser for the system operates at 20.0°C and has a quality of 0.00 at the exit. The pump and prime mover isentropic efficiencies are 65.0% and 75.0%, respectively.
Determine the prime mover power output and system thermal efficiency when the incident solar flux is 8.00 W/m2 .
A rural power line carries 1.7 A rms at 4700 V. A step down transformer reduces this to 235 V rms to supply a house. Find the turns ratio of the transformer
You find a pirate map which describes the path to a buried treasure. Starting from an old oak tree in a field, How far away from the base of the oak tree and in what direction is the treasure buried
A ladder of length b and weight W rests on a smooth floor and leans against a smooth vertical wall, the lower end of the ladder being attached by a string to a point on the wall a height h above the floor. If the ladder makes an angle theta with the ..
The tub of a washer into it’s spin-dry cycle, starting from rest and reaching an angular speed of 5.0 rev/s in 8.0 seconds. At this point, the person doing the laundry opens the lid, and a safety switch turns off the washer.
A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, How many photons are emitted by the laser pointer
Two 27.0 cm focal-length converging lenses are placed 16.5 cm apart. Where will the final image formed by the second lens be located
A long rope is suspended from the ceiling. Waves are started from the bottom traveling up the rope. It is observed that their speed changes as they move up the rope. Do they get faster or slower? Explain why this occurs.
A ball is thrown from the window of a high-rise building with an initial velocity of 5.1 m/s at an angle of 22 deg. how fast is the ball travelling when it hits the (horizontal) ground
A rocket is launched at an angle of 56.0° above the horizontal with the initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 28.0 m/s2. At this time, its engines fail and the rocket proceeds..
An object is sliding on a horizontal surface. The coefficient of kinetic friction between the object and the surface is 0.250. how far will the object travel before it stops
A doubly charged ion is accelerated to an energy of 27.0 keV by the electric field between two parallel conducting plates separated by 2.30 cm
A spring-loaded pellet gun is designed to fire 3.40 g projectiles horizontally at a speed of 39.0 m/s. What maximum force is required to load the gun
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