During a particular lightning flash, one August evening, there exists a potential difference of Vcloud - Vground = 2 x 10" V between a cloud and the ground. As a result, a charge of -22 C is transferred from the ground to the cloud in 0.01 seconds. How much power was dissipated by this lightning strike? (Report you answer in Giga-Watts; Giga is 1x109) Question 2 10 pts Which of these metals would you want to use to make the best possible wires? Table 20.1 Resistivities" of Various Materials Resistivity p Resistivity p Material (2 . m) Material (2 . m) Conductors Semiconductors Aluminum 2.82 X 10-8 Carbon 3.5 X 10-5 Copper 1.72 X 10-8 Germanium 0.56 Gold 2.44 X 10-8 Silicon 20-2300 Iron 9.7 X 10-8 Insulators Mercury 95.8 X 10-8 Mica 1011-1015 Nichrome (alloy) 100 X 10-8 Rubber (hard) 1013-1016 Silver 1.59 X 10-8 Teflon 1016 Tungsten 5.6 X 10-8 Wood (maple) 3 X 1010 " The values pertain to temperatures near 20 C