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Half Life - PowerPoint PPT Presentation


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Half Life. The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. . Half life Experiment. Take 100 pennies and put them in a box Shake the box Take out all the pennies that are heads up

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Presentation Transcript
slide2
The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value.
half life experiment
Half life Experiment
  • Take 100 pennies and put them in a box
  • Shake the box
  • Take out all the pennies that are heads up
  • Count them / graph it
  • Shake the box
  • Take out all the pennies that are heads up
  • Count them / graph it
  • continue until you run out of pennies
half life experiment 2
Half Life Experiment 2
  • T=0  100 pennies
  • T=1 (1st shake) 
  • T=2 (2nd shake) 
  • T=3 (3rd shake) 
  • T=4 (4th shake) 
  • T=5 (5th shake) 
  • T=6 (6th shake) 
  • T=7 (7th shake) 
  • T=8 (8th shake) 
  • T=9 (9th shake) 
  • T=10 (10th shake) 
  • T=11 (11th shake) 
graph of half life
Graph of half life

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PennIes

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Time in trials