Part III: Graph your data. Ba-137 Counts in 10 second (excluding background) vs Elapsed time 1000 900 800 700 600 Counts

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Part Iii Graph Your Data Ba 137 Counts In 10 Second Excluding Background Vs Elapsed Time 1000 900 800 700 600 Counts 1 (55.37 KiB) Viewed 50 times

Part III: Graph your data. Ba-137 Counts in 10 second (excluding background) vs Elapsed time 1000 900 800 700 600 Counts in 10 Second (excluding background) 500 400 300 200 100 0 0 100 200 400 500 600 300 Elapsed time (s) Part V: Determine the Half-Life At what time were there 400 counts in 10 seconds from the Ba-137m source? Is 5 minutes mark At what time were there 200 counts in 10 seconds from the Ba-137m source? Is 8 minutes mark What is the half-life of Ba-137m, or in other words, how long did it take for the activity of Ba- 137m to drop by half, from 400 to 200? It took 3 minutes from 400 to drop to 200. If you had instead measured the time to drop from 600 to 300 counts per 10 seconds, should your value for the half-life have been much different? Explain. 1