Help on all questions I forgot to click photo one one section so ill give them here. I need all questions

5. What is the distance between two charges of 8.00 x 10-5 C and 3.0 x 10-5 C that experiences an attractive force of 2.4 x 102N? [2 marks]

6. Three tiny spheres are lined up in a perfectly straight row. The first and third spheres are 4.00 cm apart and have charges of QA=2.00 x 10-6 C and QC=1.50 x 10-6 C. A negatively charged sphere is placed exactly in the middle of the two positively charged spheres. The middle sphere has a charge of QB= -2.20 x 10-6 C. What is the net force on the negatively charged sphere B? [4 marks]

7. A small metal sphere A with a negative charge of 3.30 x 10-6 C is 3.00 cm to the right of another similar sphere B with a positive charge of 2.00 x 10-6 C. A third sphere with a positive charge of 2.20 x 10-6 C is 1.50 cm directly above the second charge. Calculate the net force on charge A. [6 marks]