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Old Mar 2nd 2010, 04:07 AM   #1
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Rutherford-Bohr Model of the Atom

Alpha particles of kinetic energy 6.0MeV are incident at a rate of 3.0x10^7 per second on a gold foil of thickness 3.0x10^-6m. A circular detector of diameter 1.0 cm is placed 12 cm from the foil at an angle of 30o with the direction of the incident alpha particles. At what rate does the detector measure scattered alpha particles?

Plz help!THX!
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Old Jun 15th 2010, 02:30 PM   #2
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What have you tried so far?
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