The relative biological effectiveness of a particular radon decay is 10 due to alpha particles. if the absorbed dose of a person in a basement was 3.8 msv/y, what is the radiation dose in gy/y and the absorbed dose in rem/y?

Explanation:

radiation dose =10 (absorbed dose).

= 10×3.8 mSv/y× 1Gy/1000mSv

= 0.038 Gy/y

Now calculating the absorbed dose in rem/y  as follows

absorbed dose  =3.8mSv/y×1 rem/10 mSv

=0.38 rem/y

i think it is non rem sleep

a.   mass number from atomic number