Question

multiple choice

Answer 1

i hope the answer is B

Answer 2

\[0.5P _{0}=P _{0}e ^{-0.00012h}\]

Answer 3

so,
\[0.5=e ^{-0.00012h}\]
taking ln on both side of the equation we get,
\[\ln (0.5)=-0.00012h\]

Answer 4

and ln(0.5)=0.693147180559945..
So,
\[h=\frac{ -0.693147180559945.. }{ -0.00012 }\]

Answer 5

h=5776.2265
and let me know if my answer is wrong

Answer 6

yep its right! thanks!