What's the equation that links change in gradational potential energy store , mass , gravitational field strength ,height

How much work does the charge escalator do to move 2.30 μc of charge from the negative terminal to the positive terminal of a 3.00 v battery?

What are two different ways you could find the value of a? explain these methods.

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation