Calculate the absorbed dose received by a 150 g tumour irradiated with 12 J of gamma-ray energy.Hint: Don't forget the units!
Question
Calculate the absorbed dose received by a 150 g tumour irradiated with 12 J of gamma-ray energy.
Hint: Don't forget the units!
Solution
The absorbed dose (D) is defined as the amount of energy absorbed per unit mass. It is measured in Gray (Gy), where 1 Gy = 1 Joule/kilogram.
Given:
- Mass (m) = 150 g = 0.15 kg (since 1 kg = 1000 g)
- Energy (E) = 12 J
We can use the formula for absorbed dose:
D = E/m
Substituting the given values:
D = 12 J / 0.15 kg = 80 Gy
So, the absorbed dose received by the tumour is 80 Gray.
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