Which nucleus completes the following equation?

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?