Please help with the following Physics Questions. Question 1 (a) State Coulomb's Law

(b) Figure 1.1 shows three stationary charges at the corners of an equilateral triangle with sides of length 40cm. Find the magnitude and direction of the resultant electrostatic force on the -2 u.C charge. [Use k = 9.0 x 109 Nm2C-2] [9] +6 uC +4 UC 60 60 -2 uC Figure 1.1 2. (a) Define the term capacitance. [1] (b ) Fig 2.1 shows a circuit containing three capacitors and a battery. Find: 6 UF 2 UF 20V 8 UF Figure 2.1 (i) the equivalent capacitance of the circuit. (ii) the charge stored by each capacitor. (iii) the p.d. across each capacitor. (iv) the total energy stored by the three capacitors. [9]