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In nuclear fission, a nucleus of uranium-238, containing 92 protons, can divide into two smaller spheres, each having 46 protons and a radius of 5.90*10-15 m. What is the magnitude of the repulsive electric force pushing the two spheres apart?
Two thin convex lenses, A and B, lens A has a long focal length and lens B has a short focal length. which lens will produce an image at a smaller s'
a 1.60103 kg car rounds a circular turn of radius 22.0 m. if the road is flat and the coefficient of static friction
A wire 2.00 m long carries a current of10.0 A and makes an angle of 35.0° with a uniform magnetic field of magnitude B = 1.10 T. Compute the magnitude of the magnetic force on the wire.
A baseball is being caught; its speed goes from 90 to 0km/hr in about 0.005 kilogram. Calculate what is the size of the force acting on it
question a student calculates the frequency of a waveform produced by a tuning fork to be 303 hz. if the tuning fork is
The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. what will be the acceleration of the system
question the light intensity incident on a metallic sur- face with a work function of 2.03 ev produces photoeletrons
An unstable particle at rest breaks up into two fragments of unequal mass. evaluate what is the speed of the heavier fragment
A 251 kg wooden raft floats on a lake. When a 70kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
A playground merry-go-round has a radius of 4.20m and a moment of inertia of 255kg m2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, by rotational inertia 4.31 kg·m2 about its central axis, is set spinning c..
An object falls from a height h from rest. If ittravels a fraction of the total height of 0.6798 in the last 1.00s, find the time of its fall
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