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The 200-kg boat is powered by the fan which develops a slipstream having a diameter of 0.75 m. If the fan ejects air with a speed of 14 m/s, measured relative to the boat, determine the initial acceleration of the boat if it is initially at rest. Assume that air has a constant density of pa = 1.22 kg/m3and that the entering air is essentially at rest. Neglect the drag resistance of the water.
the position of a crate sliding down a ramp is given by x 0.25t3 y1.5t2 z6-0.75t2.5 all in units of m where t is in
determine the location Yc of the centroid C of the beam cross sectional area . then compute the moment of inertia of the area about the x axis.
Midrange and amplitude components, A shaft is subjected to a completely reversed bending stress such that Xmax=40kpsi and Xmin=-40kpsi
an air conditioning system is used to maintain a house at 20 degrees celcius when the outside temperature is 35 degrees
a force of 67000 n is applied to a steel wire 7.5 m in length. the tensile stress in the wire must not exceed 138 mpa
Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for BCC chromium when monochromatic radiation of wavelength 0.0711 nm is used.
a syringe has diameter d 4 cm and its piston is pressed with the force f 30 n. find the maximum velocity of the water
as a committed olympic weightlifter you bring alonf a barbell on your campaign trip. each end of the bar carries a mass
a spring loaded device imparts an initial vertical velocity of 50 ms to a 0.15 kg ball. the drag force on the ball is
water is the working fluid in an ideal regenerative rankine cycle with one open feedwater heater. steam enters the
a centrifuge bowl with 250mm internal diameter is turning at 4000 rmin. it contains a layer of aniline 50mm thick. if
Convert the composition of the following alloy from atom percent to weight percent (a) 44.8 at% of silver, (b) 46.3 at% of gold, and (c) 8.9 at% of Cu. Assume that the atomic weights for silver, gold and copper are, respectively, 107.87, 196.97 an..
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