Physics, 05.05.2020 04:03, beelcypher
You place a chunk of naturally radioactive (it means not enriched for nuclear purposes) material on the not very exact scale and scale reads approximately 50 kg. You know that the half-life of this material is 20 days. After 40 days of observation the scale reading will be: Group of answer choices
approximately 50 kg
approximately 25 kg
approximately 12.5 kg
Between 12.5 kg and 25 kg, depending on activity
Answers: 3
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