After 202 days the activity of a sample of an unknown type
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 82.2% of the initial activity. What is the half-life of this material?
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a coil has 345 turns and self-inductance 360 mh the current in the coil varies with time according to i 680 ma
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after 202 days the activity of a sample of an unknown type radioactive material has decreased to 822 of the initial
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