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Ahat [919]
3 years ago
11

Suppose an unknown radioactive substance produces 12800 counts per minute on a Geiger counter at a certain time, and only 800 co

unts per minute 10 days later. Assuming that the amount of radioactive substance is proportional to the number of counts per minute, determine the half-life of the radioactive substance.
Mathematics
1 answer:
suter [353]3 years ago
5 0

Answer:

2.5 days.

Step-by-step explanation:

The number of half lives  is n where

12800(0.5)^n = 800

12800(0.5)^4 = 800

so n = 4

So the half life is 10/4

= 2.5 days.

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Answer:

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Step-by-step explanation:

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3 0
3 years ago
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2 years ago
A food processor for $149.50 cash, or $5.00 down and $10.00 per month for 15 months
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Answer:

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6 0
3 years ago
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____ [38]

Answer:

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Step-by-step explanation:

80 is divisible by all of the factors given.

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7 0
3 years ago
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