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A crane (massless boom) is used to lift a 2000 lb car. The boom is 60 degrees above the horizontal. The cable above the boom makes an angle of 50 degrees to the horizontal. What is the tension in the cable.
A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +20.5 rad/s. Then, the brakes are applied. In coming to rest, What is the angular acceleration of each wheel
A hypodermic syringe contains a medicine with the density of water, Determine the speed of the medicine as it leaves the needle's tip
A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force ex..
a point charge q 1.17times10-5 c is at the center of a conducting spherical shell of radius r 29.60 cm. the total
two points on a string are observed as a traveling wave passes them. the points are at x1 0 and x2 1 m. the
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 6.89 103 W. How much energy does it extract from the outside air
While running a marathon, a long-distance runner uses a stopwatch to time herself over a distance of 100. How long will it take her to run a mile at this speed
The volume flow rate of the water supplied by a well is 1.53 x10-4 m3/s. The well is 31.8 m deep. Find the pressure difference the pump must maintain
Two 2.0-g pith balls hang in air on essentially weightless cotton threads 50-cm long from a common point of support. Find the magnitude of the charge on each ball
calculate the overall magnification of a compound microscope that uses an objective lens with a focal length of 0.50 cm
three charges each of magnitude 5.0 nc are at separate corners of a square of edge length 3.0 cm. the two charges at
The suspended 2.8 kg mass on the right is moving up on a pulley, the 1.6 kg mass slides down the 21 degree ramp, and the suspended 9 kg mass on the left is moving down on a pulley. The coefficient of friction between the block and the ramp is 0.12..
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