1. Carbon-14 is a common technique used to determine the age of organic artifacts. What percent of carbon-14 isotope remains in a wooden artifact that is 30,000 years old? (t 1/2 = 5730 years)
2. A patient recieves radioactive Iodine-125 (t 1/2 = 57 days). The dosage they recieve has a decay rate of 3.7 x 106 dps. The custom stations at the border to Canada have radioactive detection devices that can detect radiation levels as low as 1000. dps. How many months does the patient have to wait to travel to Canada so they won't set off the alarms.
3. A sample of radioactive iron-59 was manufactured by artificial transmutation exactly 2.0 years ago (365 days/year) and its level of radioactivity now is 55.3 dpm. What was its level of radioactivity when it was made?
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1. Carbon-14 is a common technique used to determine the age of organic artifacts. What percent...