The drawing shows a square, each side of which has a length of l = 0.250 m. two different positive charges q1 and q2 are fixed at the corners of the square. find the electric potential energy of a third charge q3 = -7.00 x 10-9 c placed at corner a and then at corner b.

Ithink it is letter b, i may be wrong but i think that is the answer

Texas-flood watch and coastal flood barrierscalifornia-try and look for under ground water stream 

Distance covered, s = 8ft - 4ft = 4 ftinitial velocity, u = 34 ft/sthe acrobat is moving upwards and therefore, a = -g = -9.81 m/s^2 = 32.19 ft/s^2applying equation of motion; s = ut -1/2gt^2then,4 = 34t -1/2*32.19t^24 = 34t - 16.095t^2rearranging; -16.095t^2 + 34t - 4 = 0solving the quadratic equation; t = {-34 +/- sqrt [34^2 - 4(-16.)]}/2(-16.095) = 1.06 +/- 0.93 = 0.13 or 1.99the acrobat will take 0.13 seconds to be at 8 ft above the ground. additionally, once at the maximum height, the acrobat will move down and be at the same spot (that is height) after 1.99 seconds moving down.