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A wire with a length 68 cm and a diameter of 9.0 cm is made of...

A wire with a length 68 cm and a diameter of 9.0 cm is made of an unknown material that has a temperature coefficient α of 4.6 x 10^(-3) C^(-1)°. At 20 C°, a voltage difference of ΔV is applied to the ends of the wire, and a power output of 18.7 watts is measured. If the diameter of the wire triples, the length halves, and the temperature increases to 50 C°, what will be the new power output across the wire when the same voltage is applied?

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