A physicist has developed a device that generates a beam of alpha particles (eac

Question

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 5420 alpha particles per second. You are testing different shielding materials for a test chamber that will house the alpha particle generator. You prepare a sheet of one potential material in an electrically neutral state, mount it on a perfectly insulating stand, and fire the alpha particle device at it for 22.3 seconds. Afterward, you measure that the charge of the sheet is 4.33

Explanation / Answer

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