When U 238 nucleus originally at rest, decays by emitting an alpha particle having a speed u, the recoil speed of the residual nucleus is ?
sudhanshu , 11 Years ago
Grade 12
1 Answers
Anmol gupta
Last Activity: 6 Years ago
By conservation of linear momentum. Mass of left uranium atom =238-4=234 as it has decayed an alpha particle whose mass is 4amu. 4×U=234×v where v is speed of nucleus So v=4U÷234 is required answer
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