Two charges lie along the x-axis. Is it true that the net electric field always vanishes at some point (other than infinity) along the x-axis?

ATTENTION: Please do NOT respond utilizing any form of images or text/graphs within images. User is unable to view images. Please use plain text typed responses ONLY.   QUESTION: Positive charge Q is distributed uniformly along the positive y-axis between y=0 and y=ay. A negative point charge −q lies on the positive x-axis, a distance x from the origin. Part ACalculate the x-component of the electric field produced by the charge distribution Q at points on the positive x-axis. Express your answer in terms of some or all of the variables Q, x, y, a, and constant k.   *So I took this and I was able to get: kq/r^(2) then r = C in a^2+b^2=c^2. replace r, you get cos(x/(sqrt(x^(2)+y^(2). From that I am lost besides sec(T) = 1/sqrt(x^2+y^2) What needs to be done after this to calculate an intergul?

Point charges of 20.2 µC and 44.7 µC are placed 0.48 m apart. At what point along the line between them is the electric field zero?   What is the magnitude and direction of electric field halfway between them?   There is no direction because the magnitude of the electric field is zero toward the 20.2 µC charge toward the 44.7 µC charge

Two point charges are placed on the x-axis. 12 µC at x = 0.6 m, and -15 µC at x = -0.6 m. Determine the magnitude and direction of the electric field on the y-axis at y = 0.45 m.