16. Two charged spheres, q1 = -1.5x10^-9 C and q2= 3.0x10^-9 C, are held 5.0 cm apart. What is the magnitude of the electrostatic force between the two spheres? a. 1.21x10^-5 N b. 1.62x10^-5 N c. 5.15x10^-7 N d. 8.12x10^-7 N

I. Coulomb's Law 1. A point charge q = 3 x 10-ºC is placed 0.12m away from another charge q = -1.5 x 10-6C. Solve for the electrostatic force exerted by the charges to each other g 2. Twp charged spheres of identical charges q = 4.0 µC is separated 0.70m away from each other. Solve the electrostatic force experienced by the charges. 3. Two balloons with charges of +3.37 µC and -8.21 µC exerted an attractive force towards each other with of 0.0626 N. Determine the how far the charges from each other. II. Electric Field 1. Determine the magnitude of uniform electric field if point charge q = 2.4 x 10-1“C is placed 25cm from the source.A 2. A charge q = 6.0mC is placed in a uniform electric field E = 2.9N/C. Solve for the electrical force on the charge. 3. A dipole is set up 0.15m apart with a charge magnitude of 2 x 10-7C for each charge (one is +C, the other one is -C since dipole). Solve for the magnitude of electric field at the midpoint of the dipole. III. Electric Flux and Gauss's…

1. What is the magnitude of the electric force between two positive charges, Q1=Q=1µC, five meters apart? 2. Three charged particles are arranged in a line as below. Calculate the net electrostatic force on particle 3 (the -4.0µC on the right) due to the other two charges. -0.30 m -0.20 m-| Q1 = -8.0 μC Q2 = Q3 = %3D 43.0 μC-4.0 μC 3. Calculate the magnitude and direction of the electric field at a point P which is 30 cm to the right of a point charge Q = -3.0µC.

Three-point charges are located as shown in the figure. Calculate the magnitude of resultant electric force (in N) on the Q charge. Given that Q= 10µC, q= 17µC, a=70 cm, d= 1.2 m Q a a Select one: O a. 0.80 O b. 1.37 O c. 0.69 O d. 0.68 O e. 0.40