ch42-p029 - T 1/2 , the fraction that remains is 2 3 = 1/8...

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29. (a) Since 60 y = 2(30 y) = 2 T 1/2 , the fraction left is 2 – 2 = 1/4 = 0.250. (b) Since 90 y = 3(30 y) = 3
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Unformatted text preview: T 1/2 , the fraction that remains is 2 3 = 1/8 = 0.125....
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