So I have this homework problem : "A radiation detector is a circular disk which registers photons which hit it. The probability that a photon hitting the disk at a distance r from the center is actually detected is given by S(r). A radiation detector of radius R is bombarded by constant radiation of N photons per second per unit of area. Write an integral representing the number of photons per second registered by the detector."(adsbygoogle = window.adsbygoogle || []).push({});

It would help if someone made English of this for me haha. I was thinking maybe the integral from a-b of S(r)*N dr? Let me know of any suggestions or answers or any help really, thanks!

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# Calc 2 Homework Integral Problem

Can you offer guidance or do you also need help?

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