Wednesday

July 23, 2014

July 23, 2014

Posted by **Cratch** on Thursday, August 26, 2010 at 2:26am.

- Calculus -
**drwls**, Thursday, August 26, 2010 at 7:26am1996 is 31 years after 1965. Since the half life is 32 years, the amount of Sr-90 is nearly, but not quite, reduced by half.

Fot the exact number,

N/No = 2^(-31/32) = 0.511

**Related Questions**

calculus - In the early 1960s, radioactive strontium-90 was released during ...

Calculus - The half-life of radioactive strontium-90 is approximately 31 years. ...

Calculus - [Exponential growth & decay] The half-life of radioactive strontium-...

Math - The half-life of radioactive strontium-90 is approximately 32 years. In ...

Math - The half-life of radioactive strontium-90 is approximately 28 years. In ...

Calculus - The half-life of radioactive strontium-90 is approximately 31 years. ...

AP Environmental Science (URGENT) - Strontium-90 is a radioactive waste product ...

chem - Radioactive substances decay by first-order kinetics. How many years ...

world geo - in kazakhstan ______ led to radiation pollution. A)nuclear weapons B...

math - An unknown radioactive element decays into non-radioactive substances. In...