Suppose that the microscopic scattering cross section for a common moderating material is 20 b. What

Suppose that the inconspicuous scattering cantankerous individuality for a common moderating temperamentical is 20 b. What does the temperament b belong to, and what is its appreciate in centimeters?

Complete the subjoined sentence: In the ENDF postulatesbase, the room air libraries for nuclear postulates are measured at a air of _______ °K