ch42-p075 - 75. Since the spreading is assumed uniform, the...

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75. Since the spreading is assumed uniform, the count rate R = 74,000/s is given by R = λ N = λ ( M / m )( a / A ), where M = 400 g, m is the mass of the 90 Sr nucleus, A = 2000 km 2 , and a is the area in question. We solve for a : aA m M R AmRT
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This note was uploaded on 05/19/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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