6,7,8,9, please and thank you so much

. As shown to the right, two identical 1.5 x 10" kg balls carry identical charges and are suspended by two threads of equal length. They remain stationary in the position shown. Determine the charge O on each ball. 0.40 cm 7. Examine the two charged particles to the right. 2.0 x 107 C P -5.0 x 10 3 C - X 5.0 cm 5.0 cm a) Determine the magnitude and direction of the net electric field strength at position P. a) 4 marks b) Calculate the magnitude of the force that acts on a +4.0 x 10-8 C charge placed at position P. 8. An electron is travelling at 8.50 x 10' m/s from some distance away directly towards a larger charge of -1.55 x 10- C charge, as shown below: e- 8.50 x 10 m/s O O -1.55 x 106 C How close does the electron get to the larger charge? 9. How much work is required to separate two charges of +25 JC and -25 JC further apart from an initial distance of 0.40 m to a new distance of 0.85 m