Answer all questions and conduct experiement

Resource:

https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html

9.1 Assignment 3: Investigating Electrostatic Charges Overview In this activity, you will review key characteristics about the behavior of electric charges. Materials Needed / Resource Bank . PhET Simulation: Balloons and Static Electricity Instructions Answer the below questions one at a time. Make sure to read directions within each question carefully. Questions 1. a) What are the two types of electric charge? b) Which types of electric charges will attract each other? c) Which types of electric charges will repel each other? 2. Follow the directions in the below procedure to answer some questions embedded in the procedure. Procedure 1. Go to the webpage PhET Simulation: Balloons and Static Electricity 2. You should see a sweater, balloon, and a wall with charges shown by blue and red circles. 3. What is the net charge on the sweater, balloon, and wall? (neutral, positive, or negative?) Remember that net charge is determined by the amount of positive charges canceling the amount of negative charges. If there are equal amounts of positive and negative charge then the net charge is zero (neutral). If there are more positive charges than negative charges, then the net charge is positive. If there are more negative charges than positive charges, then the net charge is negative. 4. Are the charges polarized or evenly mixed on the sweater, balloon, or wall? Remember, polarized charges means all the positive charges are on one side while all the negative charges are on another side of an object such as in this ball:5. Move the balloon close to the sweater, but DO NOT touch the sweater. Let go and see if the balloon moves or doesn't move. Move the balloon close to the wall, but DO NOT touch the wall. Let go and see if the balloon moves or doesn't move. 6. You should have observed that the balloon did not move when it was close to the sweater or the wall. There are clearly charges in the sweater, balloon, and wall, so why do they not experience attraction or repulsion? ***Do not close or reset the simulation. You will continue with more directions in the next - uestion*** 3. Follow the directions in the below procedure to answer some questions embedded in the procedure. 91.13540!\" Procedure Fiub the balloon against the sweater a little bit. Fiecord your observations about what happens to the charges of the sweater and balloon. What is the net charge of the sweater now? (neutral, positive, or negative?) What is the net charge of the balloon now? (neutral, positive, or negative? What is the net charge of the wall now? (neutral, positive, or negative?) Hold the balloon halfway between the sweater and wall. Then let go. Record your observations. Explain why this occurs based on the net charges of the sweater and balloon. Flub the balloon against the sweater more. Record your observations about what happens to the charges of the sweater and balloon. Hold the balloon halfway between the sweater and wall. Then let go. You should have noticed that the balloon moved more quickly towards the sweater after it was rubbed more on the sweater. Explain why the balloon moved more quickly. ***Do not close or reset the simulation. You will continue with more directions in the next qu estion*** 4. Follow the directions in the below procedure to answer some questions embedded in the procedure. Procedure 1. Hold the balloon near the wall. What does this do to the charges in the wall? Explain why this occurs based on the charges. What two key words describe this phenomena? 2. Hold the balloon very near the wall but DO NOT touch the wall. Then let go of the balloon. You should notice the balloon attracts back to the wall. Explain why this occurs based on the charges. 3. Test the balloon at different starting locations between the wall and sweater. Look for the point at which it changes from attracting towards the wall to attracting towards the sweater. Describe the location at which this occurs. 4. You should notice the balloon begins to attract towards the sweater when it is farther from the sweater than the wall. Why is the balloon attracted towards the sweater even at some locations where it is closer to the wall than the sweater? ***Do not close or reset the simulation. You will continue with more directions in the next question*** 5. Follow the directions in the below procedure to answer some questions embedded in the procedure. Procedure Press the \"Reset Balloons\" button. Click on the two balloons button so that you now see two balloons. Fiub one balloon against the right half of the sweater Fiub the second balloon against the left half of the sweater Describe what happened with the charges of the sweater and balloons. What is the net charge of the sweater now? (neutral, positive, or negative?) What is the net charge of each balloon now? (neutral, positive, or negative?) Place the yellow balloon on the green balloon just above it. Observe what happens Place the yellow balloon on the green balloon just below it. Observe what happens . Place the yellow balloon on the green balloon just to its right. Observe what happens. . You should notice that the yellow balloon avoids the green balloon. Explain why this occurs based on charges. 4459903935\"wa? 4C) 6. How do the observations in this activity demonstrate the concept that charge is conserved