What speed does the alpha particle have while it is emitted

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Q. Two particles are fixed on x-axis. Particle 1 of charge q1 = -2×10^-7 C at x = 20 cm and particle 2 of charge q2 = +8×10^-7 C at x = 70 cm. At what x coordinate on the axis is net electric field produced by the particles equal to zero?

Q. An atomic nucleus of mass 238u moving at 730m/s emits an alpha particle of mass 4.0u in the direction of its velocity. If the remaining nucleus slows to 640m/s, what speed does the alpha particle have while it is emitted?

Reference no: EM1384919

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