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A motercycle has a mass or 2.50*102 kg. a constantforce is excerted on it for 60.0s. The motercycle's initialvelocity is 6.00m/s and its final velocity 28.0 m/s. What is the change in momentum?
A device draws 6.000 kW of power when connected to the 12.0-V output of a step down transformer. Calculate the output voltage of the generator
Two wires made of the same material are stretched by equal forces. The second wire is twice as long as the first one, by how long is the second wire stretched
A construction company is trying to select a concrete brand for laying down a foundation. Which brand of concrete can withstand the higher stress level
Two infinitely long straight and parallel wires carry current in opposite directions of 100 A. The wires are a distance 0.40 m apart and are aligned with the x-axis and lying in the x-y plane with the origin halfway between the two wires
Two kids sit on the ends of a uniform board that is 6.62 meters long and 0.281 meters wide. The board rotates horizontally about a frictionless pivot through its center. If the board has a mass of 5.51 kilograms and each kid has a mass of 10 kilog..
Consider a thick spherical shell with total charge Q, inner radius R(i), and outer raduis R(o). Within the shell, charge is not distributed uniformly: the volume charge density p(r) is proportional to r^-2.
A flywheel is spinning with its axle pointing along the east-west direction. You are standing west of the flywheel facing toward it. What is the direction of the flywheel's angular velocity
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
A small metal bead, labeled A, has a charge of 29 . It is touched to metal bead B, initially neutral, so that the two beads share the 29 charge, but not necessarily equally. When the two beads are after that placed 5.0 apart, the force between the..
A 700 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3 m long. what is the force in each rope when washer stands 1 m from one end.
When you take your 1400-{\rm kg} car out for a spin, you go around a corner of radius 52 m with a speed of 11 m/s. what is the force exerted on it by static friction
You're designing a highway so that the maximum centripetal acceleration on a curve is no more than 1.0 m/s^2. What is the minimum curvature radius to accommodate a 100 km/h maximum speed? Please show the answer and how you got it!
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