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A window sash weighing 10 lb is normally supported by two 5-lb sash weights. Knowing that the window remains open after one sash cord has broken, determine the smallest possible value of the coefficient of static friction. (Assume that the sash is slightly smaller than the frame and will bind only at points A and B
A barrel contains a 0.120-m layer of oil floating on water that is 0.250 m deep. The density of the oil is 600 kg/m.
an aluminum transmission line with a diameter of 20mm has an electrical resistance of r 2.636x10-4 ohmsm and carries
The compressor in a plant receives carbon dioxide at 100 kPa, 280 K at a low velocity. At the compressor exit the carbon dioxide is at 1100 kPa and 500 K with a velocity of 25 m/s. The carbon dioxide then flows into an isobaric heat exchanger where i..
A bullet of mass m is shot at speed v toward a pendulum bob of mass M. The bullet penetrates through the block and emerges on the other side traveling at speed v/2.
The ball A is moving with constant velocity of 2 m/s and hits ball B. The ball B and C are at rest and they are connected with an unreformed spring with k= 100 N/m. All three balls are identical with 200 kg mass. Assume the impact between A and B is ..
1 air in a piston-cylinder assembly and modeled as an ideal gas undergoes two internally reversible processes in series
Liquid oxygen (LOX) is used as rocket fuel to launch satellites into space. However, it is easier (and less dangerous) to transport oxygen in gaseous form. What is the mass flow rate of gaseous oxygen that flows at 25 m/s through a 0.5-meter diameter..
the masses of blocks a b c and d are 9 kg 9 kg 6 kg and 7 kg respectively. knowing that a downward force of magnitude
a 6.5m tall tank has a rectangular cross?section and is filled with water to a depth of 3.5m. assuming the pressure on
determine the compressor work input requireed to compress steam isentropically from 100 kpa to 1 mpa assuming that the
steel rods rho 7832kgm3 cp 434jkg.k and k 63.9wm.k are heated in a furnace to 850degc and then quenched in a water
light bulbs are rated by their power consumption in watts w. electricity is sold in units of energy which is power
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