Need help with these lab questions and graphs please!

Procedure Start up the PhET simulation at hp:llphet.colorado.edu/en/simulation/charges-and-elds. You can run this simulation directly in your browser (may require Flash). When you have the simulation running, check the boxes in the upper right for Electric Field, Values, and Grid. Place a 1 Q5; positive charge (drag it from the box at the bottom) and a Sensor (yellow dot) in the test area. You should see a red arrow pointing away from the sensor, along with a pair of numbers. What do the arrow and numbers represent? Explore what happens to the arrow as you move the sensor around the charge. What do you notice about how magnitude and direction depend on the location of the sensor? Replace the positive charge with a negative charge (to remove charges, drag them back into the box) and move the sensor around. What has changed and what has remained the same after the switch? For the remainder of this lab, you will be taking data on how the electric eld strength depends on the distance (and direction) away from the charges. You can use the grid lines to get a sense of distance, but the tape measure (drag it from the right) can provide a more precise value. Scenario 1: Single positive charge . Place one +1 nC charge in the field. Choose seven locations to place the sensor: the closest should be Distance (m) E field (V/m) .5m from the charge and the furthest should be about 4m away. At each location, measure the electric field. Enter your data in the table at right. . Graph your data as an xy scatter plot in Excel, putting distance on the horizontal axis and electric field on the vertical axis. Label your axes, including units, and make a title with the Scenario you are measuring. Fit a curve to the data by adding a trendline and data for Scenario1 selecting the "Power" option. (Do not use linear, exponential, or polynomial fits.) Display the equation on the chart. Insert the graph in the space below. cut and paste graph from Excel into this text boxScenario 2: Line of positive charges . Place thirty positive charges along a horizontal line, evenly spaced (near the bottom of the field). Distance (m) E field (V/m) Choose seven locations above the line of charges to place the sensor: the closest should be .5m above the line and the furthest should be about 4m above; all should be in the center (left/right). At each location, measure the electric field and enter your data in the table. . Graph your data as an xy scatter plot in Excel, putting distance on the horizontal axis and electric field on data for Scenario2 the vertical axis. Label your axes, including units, and make a title with the Scenario you are measuring. Fit a curve to the data by adding a trendline and selecting the "Power" option. Display the equation on the chart. Insert the graph in the space below. . Explore how the electric field varies as you move the sensor to the left or right (no need to record data). See question 4 on the last page. cut and paste graph from Excel into this text boxScenario 3: To the right of a dipole (closely spaced opposite charges . Clear the thirty positive charges from Scenario 2, leaving just one positive charge. Next to this (almost Distance (m) E field (V/m) touching) place a negative charge. . Choose seven locations to the right of the pair of charges to place the sensor: the closest should be .5m from the center of the charges and the furthest should be about 4m away. At each location, measure the electric field and enter your data in the table. . Graph your data as an xy scatter plot in Excel, putting distance on the horizontal axis and electric field on data for Scenario3 the vertical axis. Label your axes, including units, and make a title with the Scenario you are measuring. Fit a curve to the data by adding a trendline and selecting the "Power" option. Display the equation on the chart. Insert the graph in the space below. . Explore how the electric field varies as you move the sensor in a circle around the dipole. See question 5 on the last page. cut and paste graph from Excel into this text boxScenario 4: Above a dipole 0 Using the same pair of opposite charges, choose seven locations directly above the pair of charges to place the sensor: the closest should be .5m from the center of the charges and the furthest should be about 4m away. At each location, measure the electric eld and enter your data in the table. 0 Graph your data as an xy scatter plot in Excel, putting distance on the horizontal axis and electric eld on the vertical axis. Label your axes, including units, and make a title with the Scenario you are measuring. data for Scenario 4 0 Fit a curve to the data by adding a trendline and selecting the \"Power\" option. Display the equation on the chart. Insert the graph in the space below. cut and paste graph from Excel into this text bo . Many relationships in nature follow a power law with integer exponents. Which of the scenarios that you tested have curve ts with exponents that are (very close to) integers? If the exponent is close to, but not exactly, an integer in your plot, what is your interpretation? (Hint: consider how precisely you are_ab_l_e_tg position the sensor in the simulation.) . Rank the four scenarios according to how rapidly the electric eld decreases with distance. Explain your choices. Use the curve t equations in your plots (with rounded exponent values) to help you with the ranking. . Which scenario(s) closely followed Coulomb's Law? Why does this make sense? . Describe how the electric eld above a line charge (scenario 2) varies along a direction parallel to the line of charges. . Describe how the electric eld varies as you go in a circle around a dipole.|