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Solve the following problem:
Problem: Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 490 degrees C. The cold reservoir, ambient air, is approximately 28 degrees C. The actual working efficiency of this device is 30%.
Part A: What is the theoretical maximum efficiency?
Please show all work and steps to determine the theoretical maximum efficiency.
What is the highest speed with which an 1180-kg car can round a turn of radius 75.00 m on a flat road if the coefficient of static friction between tires and road is 0.80.
A Carnot engine whose high-temperature reservoir is at 680{\rm K} takes in 530{\rm J} of heat at this temperature in each cycle, What is the temperature of the low-temperature reservoir
Ships A and B leave port together. For the next two hours, ship Atravels at 20 mph in a direction20° west of north while the ship Btravels 25° east of north at25 mph.
two charges -17 c and 5.5 c are fixed in place and separated by 2.3 m. a at what spot along a line through the charges
An ice skater is gliding horizontally across the ice with an initial velocity of +7.77 m/s. How much time elapses before her velocity is reduced to +3.00 m/s
A 0.10 kilogram ball is thrown straight up into the air with an initial speed of 12 m/s. Obtain the momentum of the ball at its maximum height
A sheet of glass (n = 1.50) is coated with a 500 nm thick layer of cubic zirconia (n = 2.18). How many phase changes do the reflected rays undergo
A 723-N person stands on a uniform board of weight 282 N and length 6.1 m. How far from the left end of the board is the person standing
Two long current-carrying wires run parallel to each other and are separated by a distance of 3.50 centimeter. find the magnitude and direction of the force per unit length the wires exert on each other
At a distance of 7.0 km from a radio transmitter, the amplitude of the radiated electric field of the radio transmissions is measured to be 0.20 volts/meter. what is the total power emitted by the radio station
Electric field lines from a charged flat plate in air to the parallel flat plate with the opposite charge (a dc capacitor). Within this space, small (compared to the size of the plates) rectangles of non -conducting and conducting materials.
Two sealed containers with volumes V1 and V2, respectively, contain dry air at pressures p1 and p2 and room temperature T. Find an expression (in symbolic form) for the new pressure
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