5 a) and b) and 6 please

-7 Kh=. 50m CV= ? 1) Two charges are arranged as shown in the diggram below . What is the magnitude and direction of the electric field at point C indicated in the diagram ? - 36.0 U L b ) what is the electric potential 5.00 cm at point C ? 8.00 am 3 + 82, Op C 6 A student repeating Young's experiment uses d pair of slits 40.0 um wide, seperated by 180 um. She finds that the distance between the first and sixth nodal lines in the interference pattern on a screen 3150 m away is 6.00 cm. What is the wavelength of the lights he isusing in Am