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 250 m/s . Part A 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. v ′ α v α ′ = nothing nothing SubmitRequest Answer Provide Feedback Next
answer) by applying the conservation of ,momentum
total momentum of original nucleus m1=222*390 m/s=86580
now for remaining , the momentum is =250*218=54500
for alpha particle momentum is =4*v
so total m2=54500+4v
so since momentum is conserved
m1=m2
86580=54500+4v
4v=32080
v=8.0*103m/s
so answer is 8.0*103 m/s or 8.0 km/s or 8020 m/s
An atomic nucleus initially moving at 390 m/s emits an alpha particle in the direction of...
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