# Determine Electric Field & Calculate Speed of Electrons

Not what you're looking for?

Please see attached file. For 1st problem, I used the formula:

E1= Kq1/r2 = (8.99 x 10^9 NM/C^2)(-6.75 x 10^-6 C)/ (2.45 x 10^2 m)^2

E1= -10.109 x 10^7 N/C which = -1.01 x 10^8? Is this right?

I had to convert r to p(d)from 24.5cm into m (scientific notation) -

Not sure if I converted it correctly? 24.5 cm = 2.45 x 10^2 m?

Then, resolved each electric field into x and y components:

E1 (for x) = (-1.01 x 10^8 N/C)(cos22) = -0.936 x 10^8 N/C ?

E1 (for y) = (-1.01 x 10^8 N/C)(Sin22) = 0.378 x 10^8?

Added both x values together, then both y values, then used Pythagorean theorem to solve for magnitude of electric field.

Have I done this correctly? Or am I mixed up? Please check for me and if wrong, explain where I went wrong and why. Also, don't understand how to graph the table in question 2 or how to calculate the speed of the electrons from accelerating potential.Please explain-I'm lost at this pt.

##### Purchase this Solution

##### Solution Summary

This solution provides assistance to determine the electric field and calculate the speed of the electrons.

##### Solution Preview

Hello and thank you for posting your question to Brainmass!

The solution is attached below in two files. the files are identical in content, only differ in format. The first is in MS Word format, while the other is in Adobe pdf format. ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

##### The Moon

Test your knowledge of moon phases and movement.

##### Basic Physics

This quiz will test your knowledge about basic Physics.

##### Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

##### Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.