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1. image

Determine the average background radiation.

2. Image 

Which is most radioactive?
 
 
 
Background Radiation Counts First minute 15 Second minute 18 Third minute 19 Total counts Average counts
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Transcribed Image Text:Background Radiation Counts First minute 15 Second minute 18 Third minute 19 Total counts Average counts
ew Radiation from sources Counts per Source Counts Type of Item Background Type of Radiation minute (cpm) per minute (cpm) alpha, beta, and Source 1 Fiesta-ware plate 167 gamma Source 2 Instant coffee 31 beta Source 3 Salt substitute 26 beta Source 4 Smoke alarm 33 alpha Source 5 Cream of tartar 35 beta
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Transcribed Image Text:ew Radiation from sources Counts per Source Counts Type of Item Background Type of Radiation minute (cpm) per minute (cpm) alpha, beta, and Source 1 Fiesta-ware plate 167 gamma Source 2 Instant coffee 31 beta Source 3 Salt substitute 26 beta Source 4 Smoke alarm 33 alpha Source 5 Cream of tartar 35 beta
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