Physics

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A mass spectrometer is used to examine the isotopes of uranium. Ions emerge from the velocity selector at a speed of 3.00 x 10^5 m/s and enter a uniform magnetic field of 0.600 T directed perpendicularly to the velocity of the ions. What is the distance between the impact points formed on the photographic plate by singly charged ions of 235U and 238U?

  • Physics -

    mv²/R=qvB
    R=mv/qB

    ΔR=R₂-R₁=
    =m₂v/qB - m₁v/qB=
    = v(m₂ - m₁)/qB)=
    =3•10⁵•(238-235)•1.67•10⁻²⁷/92•1.6•10⁻¹⁹•0.6=
    =1.7•10⁻⁴ m

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