Recent content by immuno

No.. I've not done calculus. so how do i solve for an equation involving \frac{dN}{dt} = -\lambda N? What context do i use this equation?

Hi guys i'm having much difficulties in understanding the relations between half life, decay constant and activity. I'll explain what i known here. T^{\frac{1}{2}} is the half life which is the time to reduce the nuclides by half. \lambda is the decay constant which can be solved...

Ok, so i use A = \lambda N instead of the one I've provided? Is there any difference between the two formula? So i convert years to seconds? And let grams remain as grams?

Homework Statement The unstable isotope 40K is used to know the age of old rocks formed from molten lava. The half-life of 40K is 1.28 x 10^9 years, and it decays to 40Ar, which is a gas. In the molten rock, all gas escapes, so there is no Ar. However, when the rock is solidified, the gas 40Ar...