An infinite line charge of uniform linear charge density lambda = -2.8 mu or micro CC/m lies parallel to the y axis at x = 0 m. A point charge of 0.8 mu or micro CC is located at x = 1.5 m, y = 2.5 m. Find the x component of the electric field at x = 2.5 m, y = 2.0 m. kN/C

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?