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A solenoid is designed to produce a magnetic field of 2.50 x 10-2 T at its center. It has a radius of 1.80cm and a length of 43.0 cm, and the wire can carry a maximum current of 15.0 A.
1. What minimum number of turns per unit length must the solenoid have?
2. What total length of wire is reuired?
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An old wooden tool is found to contain only 24% of 14 6C that a sample of fresh wood would. How old is the tool
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