A physicist has developed a device that generates a beam of alpha particles each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons. The device ejects a steady stream of 2360 alpha particles per second. In order to test different shielding materials for a test chamber that will house the alpha particle generator, prepare a sheet of one potential material in an clectrically neutral state, mount it on a perfectly insulating stand, and fire the alpha particle device at it for 37.3 seconds. Afterward, the charge of the sheet is 5.46 x 10-15 C. Assume that none of the alpha particles bounced back from the sheet, meaning that the alpha particles were either captured by the shielding or penetrated completely through the shielding. What percentage of the alpha particles penetrated completely through the shielding material?

A physicist has developed a device that generates a beam of alpha particles each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons. The device ejects a steady stream of 2360 alpha particles per second. In order to test different shielding materials for a test chamber that will house the alpha particle generator, prepare a sheet of one potential material in an clectrically neutral state, mount it on a perfectly insulating stand, and fire the alpha particle device at it for 37.3 seconds. Afterward, the charge of the sheet is 5.46 x 10-15 C. Assume that none of the alpha particles bounced back from the sheet, meaning that the alpha particles were either captured by the shielding or penetrated completely through the shielding. What percentage of the alpha particles penetrated completely through the shielding material?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter11: Nuclear Physics

Section: Chapter Questions

Problem 3Q

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