9514 1404 393
Answer:
0.261 ohm
Step-by-step explanation:
If the radius increases by a factor of 0.7/0.4= 7/4, the square of this factor is (7/4)^2 = 49/16. The inverse of this square is 16/49, which is the factor by which the resistance changed.
The resistance of the larger wire is ...
(16/49)(0.80 ohm) ≈ 0.261 ohm
The third equation is the correct one. After 100 years, about 115 grams will remain.
Answer:
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Step-by-step explanation:
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One year equals 31536000 seconds
365×24×60×60
