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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

A beam of 168−MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.200−kg tumor and gives it a 2.00−Sv dose, how many nitrogen nuclei were stopped? (Use an RBE of 20 for heavy ions.)

To determine

The number of nitrogen nuclei are stopped

Explanation

Given info:

The beam of nitrogen nuclei

  E=168MeV=168×1.602×1013Jm=0200kgdoes=2.00SvRBE=20

Formula used:

to calculate the number of nitrogen nuclei

  N=rem×mREB×E

Calculation:

Substituting the values

  N=200×0

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