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[b]1. Consider point a which is 70 cm north of a -4.2 µC point charge, and point b which is 74 cm west of the charge (Fig. 17-23). (a) Determine Vba = Vb - Va. (b) Determine Eb - Ea. Magnitude Direction (counterclockwise from east is positive) [b]2. Vb-Va=(EPEb/q)-(EPEa/q) [b]3...

A lightning flash transfers 4.2 C of charge and 4.5 MJ of energy to the Earth. (a) Across what potential difference did it travel? (b) How much water could this boil and vaporize, starting from room temperature?

[SOLVED] potential difference Consider point a which is 70 cm north of a -4.2 µC point charge, and point b which is 74 cm west of the charge (Fig. 17-23). Figure 17-23. (a) Determine Vba = Vb - Va. V (b) Determine Eb - Ea. Magnitude N/C Direction °...