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A tennis racket hits a tennis ball with a force of , where = 1230 , = 500 , and is the time (in milliseconds). The ball is in contact with the racket for 3.25 . If the tennis ball has a mass of 62.0 , what is the resulting velocity of the ball, , after the ball is hit by the racket?
a first class lever in static equilibrium has a 50lb resistance force and a 15lb effort force. the levers effort force is located 4ft from the fulcrum. what is the actual mechanical advantage of the system?
The steam line leading to the turbine inle
a 2-kw iron is left on the ironing board with its base exposed to the air at 25 degc. if the surface temperature is 500
consider a one-dimensional plane wall with constant properties and uniform internal generation qdot. the left face is
what four processes make up the ideal otto cycle? what is happening in an actual engine during the real processes that
the manometer shown above in problem 1 above contains water and kerosene. with both tubes open to the atmosphere, the free surface elevations differ by H=20mm determine the elevation difference when a pressure of 98.0 Pa is applied to the right.
A gasoline engine is modeled as an Otto cycle. It has at temperature and pressure at the beginning of compression of 10°C and 90 kPa. The compression ratio is 7 and the specific energy added to the air during the heat addition process is 1432.46 ..
an insulated rigid-wall tank contains air at 20 c and 2 bar. a paddle wheel located in the tank does work on the air in
a homeowner has devised a humidifier that is shown below. water is taken from the faucet and fed to a reservoir that
a carnot power cycle operates on 1.5 kg of air between the limits of 400 k and 250 k completing one cycle each second.
Assume they test null hypothesis H0: versus H1: Will the engineers decide to use the steel if H0 is rejected? Will the engineers decide to use the steel if H0 is not rejected?
IN FE analysis, What is effect of modeling a plane stress as plane strain and vice a versa?
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