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Kinetic energy of an alpha particle
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[QUOTE="haruspex, post: 6838555, member: 334404"] Try nuclear. But I am guilty of not checking exactly what the question asked for. It is possible to calculate T's value from the masses of all the reagents involved, but you don't need to. Let's start again . Working wholly symbolically (no plugging in numbers for the masses!), write the expressions for: [LIST] [*]momentum of alpha particle [*]momentum of thorium atom [*]KE of alpha particle [*]KE of thorium atom [/LIST] in terms of their masses and velocities. Then write the equation relating the momenta and consider the ratio of the KEs, not their sum. [/QUOTE]
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Kinetic energy of an alpha particle
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