This lab will use the phet simulation "Charges and Fields": https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html Experiment A. Collecting Data 1. Go to the simulation and check "Values" and "Grid". Check the distance scale at the bottom. Place two +1 nC charges separated by 4.0 m as shown in the figure. Inc Inc X X=-2.0m X=20 m 2. You will be using a sensor to measure the electric field along the x axis. You will place the sensor at various locations on the x axis for x 2 m and record the value of the electric field in units of N/C. Use the x values shown below. Record your results in an EXCEL table. **Note that the simulation gives the magnitude of the field so add a negative sign when the electric field vector points to the left.* * Region Data Points r 2.0 m? 4. For the second graph, why is the electric field always positive when -2.0 m x