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A hard sphere is thrown on a horizontal surface in such a way that initially it slips without rolling in a direction parallel to the surface with a velocity v=22 m/s. If the coefficient of kinetic friction of the surface is 0.24, find at which time the motion of the sphere becomes pure rolling?
Assume that water flowing through a pipe with a circular cross section flows most rapidly at the center of the pipe and least rapidly near the pipe walls. find the speed of the water at the center of the pipe
A large gear is made by starting with a solid metal disk of mass 5 kg and radius 25 cm. Determine the moment of inertia for the gear spinning
A 1kg ball with a speed of 3 m/s collides head on, elastically, with a 2 kg ball moving at 1 m/s. What will be the velocity of each ball after the collision
q1. a 3.20 box that is several hundred meters above the surface of the earth is suspended from the end of a short
the atomic bomb dropped on hiroshima had an explosive energy equivilent to that of 2.1 x 104 tons of tnt or 8.82 x 1013
1. a 2.0-m rope is lying on a table. you pick up one end and start raising it. how high above the table is the center
question what is the maximum torque on a coil with a magnetic moment of 5.6 a.m2 when it is placed at an angle of 90
Four ideal linear sheet polarizers are stacked one behind the other with the transmission axes of the first vertical, the second at 30°, the third at 60°, What fraction of the incident unpolarized light emerges
A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 18 kg. The coefficient of kinetic friction between the knife and the stone is 0.20. If the stone loses 10% o..
A sound source radiates sounds uniformly in all directions. the intensity of the sound at a distance of 100 m is 1.00 x 10^-4 W/m^2. What is the power of the sound source
A rocket which has an exhaust speed of 8 km/s is to have a lift off vertical acceleration of 8 m/s^2 from the NASA launch pad. at what minimum rate must the rocket consume fuel
A toaster uses a heating wire. When the toaster is turned on at22 °C, the initial current is 1.19 A. A few seconds later, thetoaster warms up and the current has a value of 0.927 A. The average temperature coefficient of resistivity for this wire ..
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