Activity Levels of Radioactive Samples

Activity Levels of Radioactive Samples

Activity level for the following samples:

1. 3600 decays in 42 seconds

2. 45,000 decays in 7.5 minutes

3. 1200 decays in 3 hours

The activity level of a radioactive sample is a measure of how many radioactive decays it undergoes in a given time period. It is typically measured in decays per unit time, such as decays per second, minute, or hour.

To calculate the activity level of a radioactive sample, you can use the formula:

Activity level = (number of decays) / (time in seconds)

Calculations:

Sample 1: 3600 decays in 42 seconds

Activity level = 3600 / 42 = 85.71 decays per second

Sample 2: 45,000 decays in 7.5 minutes (4500 seconds)

Activity level = 45000 / 450 = 100 decays per second

Sample 3: 1200 decays in 3 hours (10800 seconds)

Activity level = 1200 / 10800 = 0.11 decays per second

These calculations show the activity levels of the three radioactive samples in decays per second. The activity level gives an indication of the rate at which the sample is undergoing radioactive decay.