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Q. An atomic nucleus of mass 288 u moving at 405 m/s emits an alpha particle of mass 4.0 u in the direction of its velocity. If the remaining nucleus slows to 360 m/s, what speed does the alpha particle have when it is emitted?

Q. Determine the force acting on a moving electron when it enters a magnetic field which is perpendicular to its direction of motion. The charge on the electron is 1.6 x 10^ -19 coulombs and its velocity is 2.5 x 10^6 meters/sec. The magnetic field strength, B, is 0.035 Tesla.

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Category:- Physics
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