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Resolve a vector A which has a magnitude of 50 units and a direction of 210 degrees into two vetors B and C. C is to be 37.5 units and is to be directed at 75 degrees. Determine the magnitude of B and its directiion in degrees. Scale 1mm=unity.
an inventor claims to have devised a refrigeration cycle that at steady state requires a net power of .8 hp to remove
a thin metal disk of mass m2.00 x 10-3 kg and radius r2.20cm is attached at its center to a long fiber. when the disk
2kg of air in a closed rigid tank is fitted with an electrical resistor. the resistor draws a constant current of 10
you are to design a balloon capable of lifting 200 kilograms the mass of the gas in the balloon must be 200 kilograms
A light aircraft with a wing area of 200 ft2 has a lift coefficient of 0.4 and a drag coefficient of 0.05. the power required to maintain level flight is 66hp. determine the weight of the airplane. recall power is force in the direction of velo..
2 kg of water at 10oc and atmospheric pressure are placed in a pressure cooker and heated until the water boils at
a projectile is launched at a with a spped u and 45 degree launch angle. if the peak of the trajectiry is at 8 km from
an object whose mass is 50 lb attached to a rope wound around a pulley. the radius of the pully is 3 in. if the mass
an insulated cylinder of fixed volume of 4 meter cube contains 20 kg of nitrogen. paddle work is done on the gas by
a 0.5-in.-diameter steel e 30000 ksi bolt 1 is placed in a copper tube 2 as shown in fig. p5.47. the copper e 16000
in all but a very few vehicles today crush or crumple zones are employed as a method to reduce energy transfer to the
air at 0.1 kgs is to be cooled from 140 c to 40 c in a heat exchanger. the coolant water is at 20c constant throughout
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