What is the equivalent resistance between points a and b when R = 12 ??
a.
20 ?
b.
16 ?
c.
24 ?
d.
28 ?
e.
6.0 ?
b
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The atom 40K decays radioactively to the gas 40Ar. An ancient rock is found to contain enough 40Ar gas to indicate that 77.0% of the 40K in the rock has decayed to 40Ar since the rock solidified
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