Three 10-cm-long rods form an equilateral triangle. two of the rods are charged to + 19 nc, the third to - 19 nc. what is the electric field strength at the center of the triangle?

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration