Questions
A nucleus decays by emitting an alpha particle of speed . The recoil speed of the residual nucleus is (in )
detailed solution
Correct option is A
Initially 238U nucleus was at rest and after decay its part moves in opposite direction.According to conservation of momentum4v+234V= 238 × 0 ⇒V=−4v234Talk to our academic expert!
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A gun fires a bullet of mass 50 gm with a velocity of . Because of this the gun is pushed back with a velocity of . The mass of the gun is
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