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Steam enters a turbine steadily at 3 MPa and 450°C at a rate of 8 kg/s and exits at 0.2 MPa and 150°C. The steam is losing heat to the surrounding air at 100 kPa and 25°C at a rate of 300 kW, and the kinetic and potential energy changes are negligible. Determine (a) the actual power output, (b) the maximum possible power output, (c) the second-law efficiency, (d) the exergy destroyed, and (e) the exergy of the steam at the inlet conditions.
An arrow is launched vertically upward from a crossbow at 97.9 m/s. What is its average speed up to that moment
What vertical height does the block reach above its starting point. What speed does it have when it slides down to its starting point? m/s down the ramp.
if a hot reservoir of an engine is 300k and cold reservoir 200k, what is the carnot efficiency of this engine
If the car is traveling a circle of 461 m, and the length (width) of the road is 14.6 m, what is the vertical height of road at the top of the bank in meters? Hint: find the bank angle of the road first and then use trigonometry to find the height..
A 0.43 kg particle moves in an xy plane according to x(t) = - 13 + 4 t - 3 t3 and y(t) = 26 + 9 t - 7 t2, with x and y in meters and t in seconds. what is the angle of the particle's direction of travel
Determine the acceleration of the fireman while stopping. Determine the time it takes for the fireman to stop after reaching the ground.
Quotes provided: "I cling to my culture because it is my memory - and what is a poet without memory? I cling to my my culture because it is my skin, because it is my hart, because it is my voice, because it breathes my mother's mother's mother into m..
Derive an expression for the gravitational potential energy of a system consisting of Earth and a brick of mass m placed at Earth's center. Take the potential energy for the system by the brick placed at infinity to be zero.
What is the net force exerted on the skier, assume his acceleration is constant.
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
A proton has an initial speed of 3.3 x 105 m/s. What potential difference is required to reduce the initial speed of the proton by a factor of 2
In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5080km away, and released. What was the bird's average velocity
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