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A giant wheel, 40 meter in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at the top of the circle, the force exerted by the man on the platform is equal to his weight. Evaluate what is the speed of the man?
Two 5.0-cm-diameter metal disks separated by a0.61-mm-thick piece of Pyrex glass are charged to a potential difference of 1300V. What is the surface charge density on the glass
a particle with positive charge q = 6.40 x 10-19 C moving with speed v = 8.13 x 105 m/s toward a long straight wire with current i = 229 mA, What is the magnitude of the force on the particle due to the current
A diffraction grating with 13700 lines per 2.54 cm (i.e., per in.) is utilized to view the visible spectrum from a Hydrogen gas excited with an electrical discharge. At what angle from the beam axis will the first order peak for the red photons by wa..
A 990.0 g block of wood rests on a tabletop. A 10.0 g bullet is shot straight up through a hole in the table beneath the block. How fast was the bullet going initially
A drag force on a falling object in air is directly proportional to the square of its velocity. what will be the kinetic energy of an object
A point mass, M, is rotated at a distance R about an axis. Ifthe mass is increased to 2M, what is the new moment ofinertia? If the distance R is doubled to 2R, what is the new moment of inertia
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.20 times 106 kg/s. If two thirds the potential energy of this water were converted to electric energy, how much power would be produced by these falls?
q1. a toy train rolls around a horizontal 1.2--diameter track. the coefficient of rolling friction is 0.15.what is the
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 3.60 m/s. Ignore frictional losses. What is the height of the hill?
a double convex thin glass lens has equal radii of curvature. the focal length of the lens is 37.3 cm and the index of
a block of ice of mass 4.50 is placed against a horizontal spring that has force constant 150and is compressed a
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
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