A proton makes a head-on collison with an unknown particle at rest. The proton rebounds straight back with 4/9 of its initial kinetic energy.
Find the ratio of the mass of the unknown particle to the mass of the proton, assuming that the collision is elastic© BrainMass Inc. brainmass.com October 24, 2018, 5:15 pm ad1c9bdddf
Collision: Loss of energy when a proton collides a nucleus.
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