Asmall sphere with charge qa = +5.10 µc is at the origin, and a second sphere with charge qb = −4.20 µc is located at x = 2.50 m. at what finite distance from the origin is the electric field equal to zero?

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

d) physical means can be used to separate the components of air.