Ronaldoooooo
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1) A beta ray source of activity 8.0 x 10^4 Bq and a half life of 6hours is jinjected into a spherical tumor of radium 1cm and density 1.3x10^3kgm^-3. The energy of the electrons is 3.5MeV. Calculate the dose equivalent in the tumor 30min after injection.
2) A patient is exposed for 5s to a radioactive source that emits gamma rays of energy 2.7MeV. The activity of the source was 3 x 10^12 Bq and about 3% of gamma rays reach patient. If his mass is 70kg find the dose equivalent.
THANKS HEAPS
2) A patient is exposed for 5s to a radioactive source that emits gamma rays of energy 2.7MeV. The activity of the source was 3 x 10^12 Bq and about 3% of gamma rays reach patient. If his mass is 70kg find the dose equivalent.
THANKS HEAPS