Copper has 8.5×1028 free electrons per cubic meter. A 69.0 cm length of 12-gauge copper wire, that is 2.05 mm in diameter, carries 4.50 A of current. How long does it take to travel the wire?
Repeat Part A for a 6 gauge copper wire.

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Answerthe global climate during the paleogene departed from the hot and humid conditions of the late mesozoic era and began a cooling and drying trend which dispite having been periodically disrupted by warm periods such as the paleocene-eocene thermal maximum, persists today;