PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics
Problem
A sample contains 1.6×105 nuclei at t=0. A plot of N versus t shows that only 4.0×104 nuclei remain after 18h. Using only this information, how many nuclei will remain after 27h?
(a) 1.0×104
(b) 2.0×104
(c) 2.7×104
(d) 3.2×104