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A uranium 238 nucleus, originally at res...

A uranium 238 nucleus, originally at rest, emits and `alpha` particle. The `alpha` particle travels with a speed of v m/s. What is the recoil speed of the residual necleus?

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The correct Answer is:
4.269MeV
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A uranium 238 nucleus, initially at rest emits n alpha particle with a speed of 1.4xx10^7m/s . Calculte the rcoil speed of the residual nucleus thorium 234. Assume that the mas of a nucleus is proprotional to the mass number.

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Knowledge Check

  • A nuclide at rest emits an alpha-particle. In this process:

    A
    alpha-particle moves with large velocity and the nuclesus remains at rest
    B
    both alpha-particle and nucleus move with equal speed in opposite direction
    C
    both move in opposite direction but nucleus with greater speed
    D
    both move in opposite direction but alpha-particle with greater speed.

  • A radioactive nucleus of mass number A, initially at rest, emits an alpha- particle with a speed v. What will be the recoil speed of the daughter nucleus ?

    A
    `(2v)/(A-4)`
    B
    `(2v)/(A+4)`
    C
    `(4v)/(A-4)`
    D
    `(4v)/(A+4)`

  • A nucleus of ._84^210 Po originally at rest emits alpha particle with speed v . What will be the recoil speed of the daughter nucleus ?

    A
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    B
    `4v//214`
    C
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    D
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