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A large disk of mass Md and radius R is spinning in a horizontal plane about a vertical axis through its center with a given angular velocity of omega. A person of mass Mp (initially at the center of the disk and not spinning, let's say) then walks out to the edge of the disk (yes, the disk is that large!). Find the final angular velocity of the disk (with the person standing on its edge).Treat the person as a point mass.
Assuming that air resistance exerts a 95 N force on the person during the fall, identify the person's velocity just before hitting the net.
When a 3.15-kg fan, having blades 16.5 cm long, is turned off, its angular speed decreases uniformly from 12.0 rad/s to 4.30 rad/s in 6.00 s. how long after it is turned off does it take the fan to stop
A bare helium nucleus has two positive charges and a mass of 6.64 10-27 kg. What voltage would be needed to obtain this energy
Suppose you slowly, and at constant speed, lift a book of mass of 1 kg from the floor to a shelf 2 m above the floor. What is the workd by you done on the book
Assume too that the bullets rebound straight back with no change in speed. What is the magnitude of the average force on Superman's chest from stream of bullets.
A ray of red light in air , 650nm, is incident on semicircular block of plastic n=1.51, Determine angle of reflection at first interface
A uniform ladder of mass 50 kg and length 5m leans at an angle Theta against a frictionless wall. determine the minimum angle the ladder will not slip
Two wires are parallel and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m. However, the tension in the wire A is 6.20 102 N, and the tension in the wire B is 2.90 102 N.
machine part rotates at an angular speed of 0.46 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.59 rad/s2
Calculate the rotational inertia of a meter stick, with mass 0.64 kg, about an axis perpendicular to the stick and located at the 18 cm mark
The plates of a parallel-plate capacitor have a separation of 3.68mm , and each has an area of 15.8cm^2. What is the potential difference between the plates
A surface is infinitesimally close to and surrounds a dipole. The electric flux during the surface must be zero, since the net charge it surrounds is zero. How is it possible for the dipole to have an electric field and be consistent with Gauss' t..
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