Half-life-alyx-trnt.rar -

: You cannot predict when a single nucleus will decay, but you can predict the behavior of a large sample.

: Activity is measured in Becquerels (Bq) , representing one decay per second. The Mathematical Formula The relationship between the decay constant ( ) and the half-life is defined by the following equation: Half-Life-Alyx-TRNT.rar

T1/2=ln(2)λ≈0.693λcap T sub 1 / 2 end-sub equals the fraction with numerator l n 2 and denominator lambda end-fraction is approximately equal to the fraction with numerator 0.693 and denominator lambda end-fraction For general calculations of the remaining mass ( Ntcap N sub t ) after a certain time ( : You cannot predict when a single nucleus

National 5 Physics | Radiation | Half-life | WORKED EXAMPLES : Draw a horizontal line from this half-value

: Half-life is constant for a specific isotope and cannot be changed by physical or chemical means.

: Draw a horizontal line from this half-value to the curve, then a vertical line down to the time axis (x-axis).