Physics ...
posted by Freddo .
Hi
Radioactive decay 
A radioactive nuclide has a decay constant of  10^6 s1 what is its half life ?
I have come up with
is IN (2) / 0.000001 s1 = 693147.18055
which i am having troube working into real figures
Can anyone help please .. thanks

.5=e^kt=e^1E6t
thalfffffffffffff=ln.5/1E6
I agree with that answer, 693 thousand seconds, or about 8 days. Work it out exactly. 
Thank you for your time ..