Question

Radioactive wastes (krw = 20 w/m-k) are stored in a spherical, stainless steel (kss = 15 w/m-k) container of inner and outer radii equal t

Answer 1

To calculate the mass of 40K that must be inside the woman's body to produce a dose of 16 mrem/y, you can use the formula Mass = Dose / (Dose Rate x Time). By plugging in the values, the mass of 40K is approximately 7.74 x 10^-4 grams.

Step-by-step explanation:

Radiation Dose Calculation

To calculate the mass of 40K that must be inside the woman's body to produce a dose of 16 mrem/y, we need to use the equation:

Dose = Dose Rate x Time x Mass

Given that the dose rate is 16 mrem/y, we can rearrange the formula to solve for mass:

Mass = Dose / (Dose Rate x Time)

Plugging in the values, we have:

Mass = 16 mrem/y / (16 mrem/y x 1 year)

Converting the units to grams, we get:

Mass ≈ 7.74 x 10^-4 g

Therefore, the mass of 40K inside the woman's body that produces a dose of 16 mrem/y is approximately 7.74 x 10^-4 grams.