Can someone please thoroughly explain to me what electric potential energy is??? Please use examples if you can :)

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?