An atomic nucleus initially moving at 390 m/s emits an alpha particle in the direction of...

Question

Question

An atomic nucleus initially moving at 390 m/s emits an alpha particle in the direction of its velocity, and the remaining nucleus slows to 280 m/s .

If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, what speed does the alpha particle have when it is emitted?

Express your answer to two significant figures and include the appropriate units.

Answer 1

Answer #1

Answer 2

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