Question

Erwin was measuring a radioactive substance in the laboratory . he measured 8.0 kg of substance X at noon Tuesday .At noon Friday three days later erwin measured 1.0 kg of substance x. what is the half- life of substance X ? Erwin was measuring a radioactive substance in the laboratory . he measured 8.0 kg of substance X at noon Tuesday .At noon Friday three days later erwin measured 1.0 kg of substance x. what is the half- life of substance X ? @Physics

Answer 1

the half life of the substance is 1day

u can calculate it using the formula\[m=m _{0}e ^{-{\lambda}t}\]
and here\[{\lambda}=0.693/\tau _{1/2}\]
from ur data calculate lambda and u can find the half life