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An electric motor rotating a workshop grinding wheel at a rate of 8.90 101 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.60 rad/s2.
(a) How long does it take for the grinding wheel to stop?
s
(b) Through how many radians has the wheel turned during the interval found in (a)?
rad
A 1800 kg car is moving westward with a speed of 26 m/s, and a 2900 kg truck is traveling east with a speed of 14 m/s. Find the velocity of the center of mass of the system
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An alpha particle and beta^ {-} particle, each with kinetic energy 35 {rm keV}, are sent through a 1.10 {rm T} magnetic field. The particles move perpendicular to the field. Find the curvature radius for alpha particle's trajectory. Hint: The kine..
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
Two charged Ping-Pong balls separated by the distance of 1.62 m exert an electric force of 0.0234N on each other. What will be the force if the objects are brought closer, to a separation of only 31.4 cm.
Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and ..
A straight 2.06 -mm-diameter copper wire can just 'float' horizontally in air because of the force of the Earth's magnetic field B, What current I does the wire carry
At the instant the alpha particle leaves the nucleus, the centers of the two are 7.5 apart and essentially at rest. Find their speeds while they're a great distance apart. Treat each particle as a spherical charge distribution.
Three successive resonance frequencies for a certain string are 481., 518., and 555. Hz. What is the fundamental frequency
Find the average force of the water on the diver. The swimmer comes to a stop 4 m below the surface. Find the average net force acting on the diver as coming to a stop in the water.
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