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In 1790 John Curr of Sheffield, England, made an atmospheric steam engine with a 61.0-inch diameter piston and an 9.50 ft stroke. The engine operated with a mean effective piston pressure of 7.00 lbf/in2 and ran at 12.0 strokes per minute. It produced a duty of 9.38 million.
Determine (a) the thermal efficiency,
(b) the horsepower output, and
(c) the boiler heat input rate of this engine.
Ignore the boiler feed pump power requirement.
A 4.00-kN piano is lifted by three workers at a constant speed to an apartment 27.6 meter above the street using a pulley system fastened to the roof of the building. determine the time required to lift the piano from the street to the apartment
question1air is blown throughout a circular and horizontal venturi tube. the diameters of narrow and wider sections of
two resistors r1 and r2 are in series with a 7.8 volts battery. if r1 has a resistance of 2.0 omega and r2 receives
What is the change in the internal energy of the system is the pressure is again constant at 2.0 atm - How much heat was added to the gas?
A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.3 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? m/s
A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45 degrees. With what speed was it thrown
A bungee jumper with mass 63 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 47. He finally comes to rest 21.00 below the level of the bridge.
A water bed for sale has dimensions of 1.83 m x 2.13 m x 0.229 m. Find the weight of the water in the bed
What is the peak emf of the generator when its coil rotates at a frequency of 50 Hz? Find out the frequency of the coil's rotation when the peak emf of the generator is 163 V.
An electron starts from rest 54.9cm from a fixed point charge with Q = -0.278uC. How fast will the electron be moving when it is very far away
Water flows over a section of Niagara Falls at the rate of 1.1 x10^6 kg/s and falls 55 m. How much power is generated by the falling water.
Water flows in a 5-m-wide channel with a speed of 2 m/s and a depth of 1 m. The channel bottom slopes at a rate of 1 m per 1000 m. Determine the Manning coefficient for this channel.
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