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In a steam power plant 1 MW is added at 700°C in the boiler, 0.58 MW is taken out at 40°C in the condenser, and the pump work is .02 MW. Find the plant thermal efficiency? Assuming the same pump work and heat transfer to the boiler is given, how much turbine power could be produced if the plant were running in a carnot cycle?
A 81.0-kg daredevil exhibitionist hangs on to the end of a long bungee cord attached to the railing of the Brooklyn Bridge and oscillates vertically, What is the frequency of oscillation
The motion of peg P is constrained through the lemniscate curved slot in OB and by the slotted arm OA.
determine a set of non-orthogonal base vectors a j k b i k and c i j.a establish their reciprocal vectors and
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
One runner ran the 100-m dash in 11.9 s. Another runner came in secona at 12.4 s. determine the sepaaration between the two runners
Monochromatic light of wavelength 510 nm is incident on a diffraction grating with 5000 lines/cm. What is the highest-order spectrum that can be observed?
Given that hbar = 1.055*10^-34 J*s, find the wavelength in nm of light emitted from a hydrogen atom when its electron moves from the n=6 state to the n=2 state. What is the minimum uncertainty in the momentum of the electron
a laser beam passes through a converging lens with a focal length of 19cm... at what distance past the lens has the
A photon with wavelength 0.02680 nm strikes a free electron that is initially at rest. What is the energy of the scattered photon
can two monochromatic sources of significant frequency difference produce an observable interference pattern?in a
a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens
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
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