Recent content by kkid

I am trying to understand MRI scanners. I know that MRIs work by aligning the protons in the direction of the large magnetic field and the radio frequency sets the frequency of the oscillations to the lamour frequency - also raising its energy level. Then when the RF is switched off, the...

I eventually did this by altering this equation: N = N0e-λt if one divides by N0 then the left hand side is just a faction of the start and end amounts (whether this is in terms of amount of atoms or in terms of mass it will be the same. In this case the left hand side of the equation...

TA sample of 24Na has a half-life of 234 hours, How much time elapses before a 5μg sample contains 1μg of undecayed atoms? I have calculate the decay constant (8.23x10-7) What do I do now?