Coulomb ForceOpen the simulation https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.htmlSelect the Macro Scale option. Check the box to show the Force values (on the right side).Select two charge values to analyze and record below, the exact values are not as important as we will be investigating the dependence of the Electric Force on the separation (r) between the charges.Move charge 1 (q1) so that its center is located at 0 cm. You can move the ruler to make sure the center is at zero. Move charge 2 (q2) so that its center is at the 2 cm mark.Record the magnitude of the force between the particles in the table below.Move q2 so its center is at the next separation listed. Repeat your measures of Force for the separations listed in the table below, making sure the center of the charge is at the appropriate location.q1 = ______________________ q2 = _________________________Separation, r (meters)Force (Newtons)0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 Using your favorite graphing tool (such as Excel or a graphing calculator), plot the Force versus separation. (include a copy or pic of the graph when you turn in your report)Fit a power law to your data (of the form)y = arb (1)where a is the power-law coefficient, r is the separation, and b is the power. Based on your fit, what are a and b? a = _________________ b =__________________Comparing Coulomb’s Force Law and equation 1 above, what should a and b equal? Determine these by plugging in the value of k, the value of the charges you used, and inspection of the Coulomb Law. a = _____________________________, b = ____________________________________Are a and b what you expected?Next, we will investigate the dependence of the force on the value of the charges.Choose values for q1, q2, and the separation distance and make note of the magnitude of the force. Now increase the magnitude of q2. How does this affect the magnitude of the force? Does it get larger or smaller? Choose values for q1, q2, and the separation distance. Select charge values so that the charges are of opposite sign. Notice the direction of the force between the charges. Now, keeping the separation and magnitude of the charges the same, make the two charges the same sign (ie both positive or both negative). How does the magnitude of the force compare to the above? What is the direction of the force now? Does this agree with the results you obtained when you did the Electrostatics lab?

Coulomb Force Open the simulation https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.html Select the Macro Scale option. Check the box to show the Force values (on the right side). Select two charge values to analyze and record below, the exact values are not as important as we will be investigating the dependence of the Electric Force on the separation (r) between the charges. Move charge 1 (q1) so that its center is located at 0 cm. You can move the ruler to make sure the center is at zero. Move charge 2 (q2) so that its center is at the 2 cm mark. Record the magnitude of the force between the particles in the table below. Move q2 so its center is at the next separation listed. Repeat your measures of Force for the separations listed in the table below, making sure the center of the charge is at the appropriate location. q1 = q2 = ___ Separation, r (meters) Force (Newtons) 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 Using your favorite graphing tool (such as Excel or a graphing calculator), plot the Force versus separation. (include a copy or pic of the graph when you turn in your report) Fit a power law to your data (of the form) y = arb (1)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Coulomb Force
Open the simulation

https://phet.colorado.edu/sims/html/coulombs-law/latest/coulombs-law_en.html

Select the Macro Scale option. Check the box to show the Force values (on the right side).

Select two charge values to analyze and record below, the exact values are not as important as we will be investigating the dependence of the Electric Force on the separation (r) between the charges.

Move charge 1 (q₁) so that its center is located at 0 cm. You can move the ruler to make sure the center is at zero. Move charge 2 (q₂) so that its center is at the 2 cm mark.

Record the magnitude of the force between the particles in the table below.

Move q₂ so its center is at the next separation listed. Repeat your measures of Force for the separations listed in the table below, making sure the center of the charge is at the appropriate location.

q₁ = ______________________ q₂ = _________________________

Separation, r (meters)	Force (Newtons)
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1

Using your favorite graphing tool (such as Excel or a graphing calculator), plot the Force versus separation. (include a copy or pic of the graph when you turn in your report)
Fit a power law to your data (of the form)

y = ar^b (1)

where a is the power-law coefficient, r is the separation, and b is the power. Based on your fit, what are a and b?

a = _________________

b =__________________

Comparing Coulomb’s Force Law and equation 1 above, what should a and b equal? Determine these by plugging in the value of k, the value of the charges you used, and inspection of the Coulomb Law.

a = _____________________________, b = ____________________________________

Are a and b what you expected?
Next, we will investigate the dependence of the force on the value of the charges.
Choose values for q₁, q₂, and the separation distance and make note of the magnitude of the force. Now increase the magnitude of q₂. How does this affect the magnitude of the force? Does it get larger or smaller?
Choose values for q₁, q₂, and the separation distance. Select charge values so that the charges are of opposite sign. Notice the direction of the force between the charges.

Now, keeping the separation and magnitude of the charges the same, make the two charges the same sign (ie both positive or both negative). How does the magnitude of the force compare to the above? What is the direction of the force now?

Does this agree with the results you obtained when you did the Electrostatics lab?

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Let q₁ and q₂ denote the two charges, r₁, r₂, and r₃ denote the distances between the charges, and F₁, F₂, and F₃ denote the forces between the charges. Therefore, the force for the first separation can be determined as,

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