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At a coal-burning power plant a steam turbine is operated with a power output of 465 MW. The thermal efficiency of the power plant is 31.6%. (a) At what rate is heat discarded to the environment by this power plant? (b) At what rate must heat be supplied to the power plant by burning coal?
Use the equation of the position to find the potential elastic energy in a Simple Harmonic Motion(SHM). What would you need to do to find the elastic constant of a spring
A skater initially turning at 3.6 rev/sec slows down and stops in 4.2 seconds. How many revolutions does she make before stopping
A dinoflagellate takes 5.2 s to travel 0.6 mm. Approximate a dinoflagellate as a sphere of radius 35.0 µm (ignoring the flagellum). What is the drag force on the dinoflagellate in seawater of viscosity 0.0009 Pa · s?
An airplane whose air speed is 628km/h is supposed to fly in a straight path 33.0? north of east. But a steady 88km/h wind is blowing from the north. In what direction should the plane head
Four identical charged particles (q= +10.0µC) are located on the corners of a rectangle. find the direction of the total electric force exerted on the charge at the lower left corner by the other 3 charges
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
A 110 pound person climbs the benches from the bottom to the top of Sun Angel Track Stadium. Calculate the minimum amount of glucose (in grams) that would need to be oxidized
An aircraft weighing 959 N is accelerated at 9 m/s/s for 11 seconds, How much work was done on the aircraft
An object is launched with an initial velocity of 8.0 m/s to the horizontal from 327cm above the ground level. What is the final speed of the object
Starting from its nest, an eagle flies at constant speed for 3.2 min due east, then 4.6 min due north. How long is the eagle in the air
Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 44.0, What is her average speed on the return trip
Two metal conductors that are separated by a distance of 0.89 mm. When an electric spark jumps between them, What is the magnitude of the potential difference
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