What happens when the difference in charge between a cloud and the ground is too great?

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

Which is not true about oxygen-17 and oxygen-18?

What will a positive and a negative charge do if they are separated from each other?