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a pulley of 5.0cm radius, on a motor, is turning at 30 rev/s and slows down uniformly to 20 rev/s in 2 s. calculate the angular acceleration of the motor, the number of revolutions it amkes in this time, and the length of the rope it winds in this time.
a particle with charge 7.88 microc is placed at the fixed position x 3.00 m in an electric field of uniform strength
There is a uniform electric field for regions near the surface of the earth equal to -150 N/C K. (It is directed toward the center of the earth or simply downward).
question1a square plate of side a and mass m is thrown into the air so that it rotates freely under zero torque. the
A person sitting in a stationary boat notices the waterwaves passing by the bow of the ship once every 4 seconds. At what speed are the water waves moving
A converging lens has a focal length of 0.080 m. An objectis located 0.040 m to the left of this lens. where isthe final image located
A child slides across a floor in a pair of rubber-soled shoes. The frictional force acting on each foot is 20.0 N. The footprint area of each shoe sole is 16.0 cm2, and the thickness of each sole is 4.30 mm. Find the horizontal distance by which the ..
question1a 1200-kg automobile travels at a speed of 12 ms.nbsp a what is it the kinetic energy? b what is work that
A charge of 0.99 C is spread uniformly throughout a 18 cm rod of radius 4 mm. What are the volume and linear charge densities?
Water with a mass of 0.500 at 15.0 is mixed with 0.800 of water at 35.0. What is the final temperature of the mixture? Express your answer in degrees Celsius. Suppose that in an insulated container, 0.100 of water at 20.0 is mixed with 1.500 of ic..
A ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center. The disk has mass md = 3.3 kg and radius R = 0.22 m. The rods each have mass mr = 1.2 kg and length L = 0.76 m. 1) What is the moment of inertia of each rod a..
A runner weighs 635 N (about 140 lb), and 72% of this weight is water. How many moles of water are in the runner's body? moles
A 4.6 long, 480 steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction.
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