Troubled by Integrating Dose Rate

[matt222]

Homework Statement

the problem is attached

Homework Equations

The Attempt at a Solution

I don't understand to the Q but what i did is just integrating the dose rate , the Q is not clear to me can anyone help me

 

[gneill]

Homework Statement

the problem is attached

Homework Equations

The Attempt at a Solution

I don't understand to the Q but what i did is just integrating the dose rate , the Q is not clear to me can anyone help me

The "Q" is not clear to me either, possibly because I don't see an actual question anywhere. The attached diagram just seems to outline a general situation.