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A woman with mass 50.5kg is standing on the rim of a large disk that is rotating at 0.505rev/s about an axis perpendicular to it through its center. The disk has a mass of 112kg and a radius of 4.05m. Calculate the magnitude of the total angular momentum of the woman-plus-disk system, assuming that you can treat the woman as a point.
A large storage tank, open to the atmosphere at the top and filled with water, Determine the speed at which the water leaves the hole
A wire carries a steady current of 2.60 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field, = 1.40 T. what is the magnetic force on the section of wire
A bird flies 3.0 km due west and then 2.0 km due north. What is the magnitude of the bird's displacement
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.60 10-4 m2, find the cross-sectional area of the water stream at a point 0.09 m below the faucet
Two 10-cm-diameter charged disks face each other, 20 cm apart. The left disk is charged to +55 nC and the right disk is charged to -55 nC. What is the electric field both magnitude and direction, at the midpoint between the two disks
A series LR circuit with L = 20 mH and R = 2.0 k? is connected to a potential source of amplitude 5.0 V and angular frequency 200 rad/s. find the voltage across the resistor and the inductor
the n = 2 state of hydrogen has a lifetime of about 10^-8 sec. Suppose the atom jumps from the n=2 state to the ground state, what is the uncertainty in the energy of the photon that is emitted
An 8.0g bullet is shot into a 5.0kg block, at rest on a frictionless horizontal surface. Find the speed of the bullet
A 5 m deep river runs on a horizontal 7 m long bridge and 8.5 m wide, which is hung in air 10 m high above the ground. What is the normal force exerted upwards by the bridge
A dockworker applies a constant horizontal force of 70.0N to a block of ice on a smooth horizontal floor. how far does the block move in the next 4.50s
a 12.0 g plastic ball is dropped from a height of 2.50 m, How much mechanical energy was lost during the balls fall
The radius of the earth's very nearly circular orbit around the sun is 1.5x10^11. Find the magnitude of the earth's velocity as it travels around the sun
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