Question

a moving radium nucleus decays into radon and an Alpha particles the two particles produced during the Decay move in different directions what is the direction of motion of the centre of mass of the Decay​​

Answer 1

Answer:

No external forces act on the nucleus during splitting, so total momentum is conserved. Therefore, after splitting, the sum of momenta of the fragments must be zero. In this case, we have two fragments - Radon nuclues and alpha particle, which essentially tells us that the two must fly off in opposite directions.

Answer 2

Answer:

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