Monday

September 1, 2014

September 1, 2014

Posted by **Heena** on Sunday, November 14, 2010 at 12:45am.

- Physics -
**drwls**, Sunday, November 14, 2010 at 4:39amWe don't draw graphs for students here. I suggest you use semilogarithmic graph paper, with a logarithmic mass scale, and a linear scale for time. The decay curve will then be a straight line.

The half life of Pu-241 is 13 years.

M = 32*(2)^-(t/13)

LogM = Log32 -(t/13)*Log2

= 1.505 - 0.02316 t

(using log to base 10)

= 1.042 when t = 20 years

M = 11 g

About 1/3 will remain after 20 years.

**Answer this Question**

**Related Questions**

algebra 4 - write an exponential decay model that describes the situation. one ...

chemistry - You want to heat a satellite by radioactive decay of 238 plutonium. ...

CALCULUS - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...

Calculus - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...

Calculus - A smoke detector contains 0.2 mg of Americium 241 (Am-241), a ...

chemestry - Please answer the following THAT I CAN'T!!! Where is Plutonium found...

Chemistry - a.) How much energy is emitted in each alpha decay of plutonium-234 ...

physics - How many coulombs of positive charge are there in 8.70 kg of plutonium...

physics - How many coulombs of positive charge are there in 8.70 kg of plutonium...

Math - _The_Natural_Base_e_ An accident in 1986 at the Chernobyl nuculear plant ...