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A uniform flux of particles, each of mass m and speed V, is incident upon a fixed scatterer that exerts the repulsive radial force F = (mγ2/r3)r^.
Find the impact parameter p as a function of the scattering angle θ, and deduce the differential scattering cross section. Find the total back-scattering cross-section.
A tank of 20 ft3 volume is half-filled with liquid water, and the remainder is filled by vapor at 550 psia. The water is heated until one-half of the liquid (by volume) is evaporated, while an automatic valve lets saturated vapor escape at such a rat..
A four-cylinder two-stroke engine operating at 2400rpm produces 55kW of total brake power. The cylinder displacement is 1L. Assume the heat release perks of fuel to be 35MJ and the thermal efficiency to be 30%.
four 4.0 lbm of co2 are contained in a piston-cylinder system. the co2 is initially at a temperature t1500degr and
a piston-cylinder device initially contains 0.6 m3 of water vapor at 250 kpa. the specific volume and specific internal
in a railroad switchyard a 50 ton freight car is sent at 7.4 mih toward a 27 ton car that is moving in the same
A cylindrical log has a diameter of 450 mm and a length of 6.75 m. When the log is floating in fresh water with its long axis horizontal, 110 mm of its diameter is above the surface. What is the specific weight of the wood in the log?
The race car stars from rest at s = 0 and travels along a straight road. Its v-t graph is obtained as shown. The flat part of the graph is caused by shifting gears. Determine the acceleration, velocity, and position
What variables would you measure (and feedback through suitable controllers) in order to improve the performance of the control system?
A motor has a disk mounted on its shaft. The disk has a diameter of 1 foot and weighs 60 pounds. Starting from rest, the motor rotates at 350 rpm after 5 seconds. If the motor has a 92% efficiency, determine the input power in watts.
If the concentration difference for diffusion across a thin film is doubled, what happens to the flux? If the diffusion coefficient across a thin film is doubled, what happens to the flux?
Calculate the maximum bending stress σmax in the tie due to the loads P, assuming the distance L = 1500 mm and the overhang length a 500 mm.
nickel has a fcc crystal structure and 0.125 nm atomic radius. draw two nearest parallel 110 planes in a fcc crystal
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