Physics, 18.06.2020 00:57, hastaten

Determine the length that a lead shield should have in order to to stop 99% of a beam of γ-rays of 0.5 MeV. (λ1/2 (γ, Pb)= 0.42 cm.)

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Determine the length that a lead shield should have in order to to stop 99% of a beam of γ-rays of 0...