A physicist found that a force of 0. 72 N was measured between two charged spheres . The distance between the spheres was 0. 90 m . Calculate the force between the two spheres when the distance was decreased to 0. 50 m . F2 = 2. 6 N 1. ] N 2.3 N 1.3 N Question HEMultiple Choice* Determine the field strength , E , experienced by a test charge , J . if a charge of 7. 0 x 10-5 coulomb's is placed on ; and a force of 5. 2 N is applied . 7. 4 x 10 4 1 . 3 * 10 -= 7. 4 x 10 * 1. 5 x 105 Question # 7 Multiple Choice Determine the potential difference between two charged parallel plates that are 0. 20 cm apart and have an electric field strength of 6. 0 V/cm . O. O30V 1. 2 V 2. 4V 3.6 V Question HaMultiple Choice*