Question #340108

A beam of particles strikes a wall containing 2x10^29 nuclei per m^3. Each nucleus behaves like a sphere of radius 3x10^−15 m. Find the thickness of a wall that exactly half the particles will penetrate without scattering. What thickness would be needed to stop all but one particle in 10^6 ?

Expert's answer

"d=\\frac{\\sqrt\\frac rn}2=6.1\\cdot 10^{-8}~m."

Learn more about our help with Assignments: Physics

## Comments

## Leave a comment