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A scaffold of mass 43 kg and length 6.0 m is supported in ahorizontal position by a vertical cable at each end. A windowwasher of mass 87 kg stands at a point 1.9 m from one end.
a) What is the tension in the cable closer tothe painter?b) What is the tension in the cable further from the painter?
calculate the average induced voltage between the tips of the wings of a boeing 747 flying at 880 kmhr above east
A satellite in Earth orbit has a mass of 106 kg and is at an altitude of 1.94 106 m.(Assume that U = 0 as r ? infinity), What is the potential energy of the satellite-Earth system
Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 6.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force.
a computer disk drive spins at 7200 rpm when a brief 30 second power outage occurs. during this time the drive slows
A football is kicked 56.7 meters. If the ball is in the air 5.33 s, with what initial velocity was it kicked? direction above the horizontal
If you submerge an 8kg log in water and it displaces 10kg ofwater, what will be the net force on the log be the moment you letgo of the log
A 57 kg student sits on a chair which is solely supported by a solid 1/2 meter long steel rod 1cm in diameter. To the nearest micron (millionth of a meter) what is the change in length of the rod produced by the student's weight.
an elevator mass 4950 is to be designed so that the maximum acceleration is 6.00 times 10-2. what is the minimum force
If the intensity of the electromagnetic radiation produced by the Sun is about 1.4 kW/m2 near the Earth, what size would a sail have to be to accelerate a spaceship with a mass of 11.9 metric tons at 1.39 m/s2
What average force is required to stop an 1100-kg car in 8.0 seconds if the car is traveling at 95 km/h
a cylindrical copper rod has resistance of 0.3 ohm. it is reformed to 3.8 timesm its original length with no change of
The filament of a light bulb has a temperature of 2.90 103 °C and radiates 66 watts of power. Find the surface area of the filament
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