Calculate the fraction per mm2 area of 7.7-MeV α particles scattered at 45° from a gold foil of thickness 2.1 x 10 -7 m at a distance of 1.0 cm from the target.
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Calculate the fraction per mm2 area of 7.7-MeV α particles scattered at 45° from a gold foil of thickness 2.1 x 10 -7 m at a distance of 1.0 cm from the target.
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