A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 141 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.190-kg tumor, which receives a biologically equivalent dose of 156 rem. How many nuclei are in the beam?

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A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 141 MeV, and the
relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed
onto a 0.190-kg tumor, which receives a biologically equivalent dose of 156 rem. How many
nuclei are in the beam?
Transcribed Image Text:A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 141 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.190-kg tumor, which receives a biologically equivalent dose of 156 rem. How many nuclei are in the beam?
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