Posted by **Owen** on Wednesday, December 5, 2012 at 9:09pm.

A radioactive substance is found to register 1000 counts per second on a Geiger counter. Twenty-four hours later it registers 125 counts per second. What is its half-life?

## Answer this Question

## Related Questions

- Chemistry - a sample of radioisotope has a count rate measured by a Muller-...
- Chemisty - The activity of a radioisotope is 3000 counts per minute at one time ...
- physical science help please! - If a sample emits 1000 counts per second when ...
- physical science - If a sample emits 1000 counts per second when the detector is...
- physics lab - For an unknown sample of the experiment, students measure 1602 ...
- Logarithms - 1.) A fossil is burned and the CO2 produced is captured. It ...
- math with application - If 12 % of a radioactive substance decays in 7 hours, ...
- Science - Natural Uranium contains 15 percent Sm147. Sm147 is radioactive and ...
- Science - Radiation - A radioactive isotope, used in the agricultural industry ...
- Math-Exponential Decay - A lab technician had 58 grams of a radioactive ...

More Related Questions