82. ••• Lightning bolts can carry as much as 30 C of charge and can travel between a cloud and the ground in around 100 μs. Potential differences have been measured as high as 400 million volts. (a) What is the average current in such a lightning strike? How does it compare with typical household currents? (b) What is the resistance of the air during such a strike? (c) How much energy is transferred during such a strike? (d) What mass of water at 100°C could the lightning bolt evaporate? Example 18-9

Complete Question

The complete question is shown on the first uploaded image

The average current is  300,000 A =0.3 MA

The resistance is  = 1333.33 =1.33 K ohm

The energy translated is = =

The mass of water at 100°C the lightening bolt  can evaporate is  

Explanation:

The explanation is shown on the second uploaded image

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

higher potential

explanation:

because it is in a high speed so it must move into a of high potential