31. ASSIGNMENT: Gravitational vs. Electrical Challenge (Due March 15)

ASSIGNMENT: Gravitational vs. Electrical Challenge (10 points)

For this assignment, you will be solving the following problem:

You would like to make a proton levitate.  You think it could be accomplished by putting a negatively charged metal plate 1 meter above the proton.  

1. What charge does the plate need to have?

2. How many elementary charges is this?

Complete the above problem, showing all of your work.  This will include descriptions, diagrams, and mathematical calculations, so you will either need to complete this in a Google Doc, on paper, or in paint.  As I look at your solution to the problem, I want every step to be clear and understandable.

Some useful information, that might help you:

- Elementary charge is 1.60 x 10^-19 C. 

- The mass of a proton is 1.67 x 10^-27 kg.

- The Earth has a radius of 6.37 x 10⁶ m and a mass of 5.97 x 10²⁴ kg.

- g (acceleration due to gravity) is 9.8 m/s².

- G (the gravitational constant) is 6.67 x 10^-11 Nm²/kg².

- k (Coulomb's constant) is 9.0 x 10⁹ Nm²/C².

Watch the following video for tips on the setup of this problem:

Submitting Your Assignment

1. Click the Add Submission button.

2.  If you completed this problem in Paint or on paper, in the text box that appears, click the INSERT IMAGE icon .  Click BROWSE REPOSITORIES, then CHOOSE FILE to navigate to where you saved your image.  Click UPLOAD THIS FILE.  Click the box for DESCRIPTION NOT NECESSARY.  Click SAVE IMAGE.  You should now see your image in the textbox.

If you completed this problem in a Google Doc, in the text box that appears, paste the link to your Google Doc.

3.  Click Save Changes

After you have completed this assignment, it will be marked as complete with a checkmark after it has been graded by the instructor.