Open the simulation: https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.html Click on the "Macro Scale" box. It will open the simulation. Familiarize yourself with the simulation. Play around with the settings, change the magnitude of the charges, the distance between the charges, and observe how the magnitude and direction of the force change. When you are finished assessing all the settings, click on the orange reset button. Step 1: Set change 1 to +4UC and charge 2 to + 8pC. Set the distance "r" between the charges to 2 cm (by dragging one or both charges along the scale, e.g., if charge 1 is at 4 cm mark and charge 2 at 6 cm mark, the distance between them r = 2 cm = 0.02 m, remember i m = 100 cm). Record the magnitude of charges (in coulombs, remember that 1 IC = 10-6C), the distance between them (in meters), and the magnitude of the force in the table on the next page. Notice that the force of qi on q2 is the same as that of q2 on qu. Also notice that the direction of the force in the simulation shows that the two charges repel each other (as you would expect since both the charges are positive). Step 2: Keeping the charges fixed qi = 4UC and q2 - 8 uC, change the distance between them to 3 cm or 0.03 m, record the force again in the table, along with the distance and magnitude of charges. Step 3: Repeat step 2 for distances 4 cm, 5 cm, 6 cm, 7 cm, 8 em, 9 cm, and 10 cm. Record all the data in the table. Charge q1 Charge q2 Force on a by q (C) (C) (m) 4 x 10-6 8 x 10-5 0.02