# Finding the Speed of an electron

Not what you're looking for?

The rest mass of an electron is 9.11x10^(-31) kg. When the electron is in motion its mass becomes 15.2x10^(-31) kg. Find the speed of the electron.

##### Purchase this Solution

##### Solution Summary

This solution explains the problems of finding the speed of an electron. The solution is given in detail.

This is mainly for solving the problem on special theory of relativity.

##### Solution Preview

Theory of Relativity (1)

By:- Thokchom Sarojkumar Sinha

The rest mass of an electron is

kg.

When the electron is in motion its mass becomes

kg.

Find the speed of the electron.

Solution:- Let be the rest mass of an electron and m be the mass of the electron when it is moving with velocity u.

Therefore,

...

###### Education

- BSc, Manipur University
- MSc, Kanpur University

###### Recent Feedback

- "Thanks this really helped."
- "Sorry for the delay, I was unable to be online during the holiday. The post is very helpful."
- "Very nice thank you"
- "Thank you a million!!! Would happen to understand any of the other tensor problems i have posted???"
- "You are awesome. Thank you"

##### 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.

##### Intro to the Physics Waves

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

##### 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.

##### The Moon

Test your knowledge of moon phases and movement.