Water flows over a section of a Niagara Falls at a rate of 1.20 x 10^6 kg/s and falls 50.0 m. What is the power of the waterfall ?

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v