Given the force between two or more points as: F= 2 x 9, (r-r) 4RE-P Point charges 125nC and -90nC are located at (2, -4, -6) and (4, 7, -3), respectively. (a) Determine the force on a 15nC point charge located at (-6, 3, -2). (b) Determine the electric field E at (-6, 3, -2). Note: Show on paper step by step the working calculations of the questions. Task 3: Simulation (SK3, SK6, SP1, SP3, SP7) Solve the questions in Task 2 by using MATLAB simulation. Verify that both the calculated Task 2 and simulated Task 3 answers are the same. Note: Refer to the rubric for marking scheme. [20 marks] [60 marks]