Question

calculate the velocity of electron so that it's mass is twise of its rest mass​

Answer 1

Answer:

Explanation:

The mass of an electron at speed v is  

m=  1−v  2  /c  2 m  0

where m  0

is its rest mass. If m=2m  0

2=  1−v  2  /c  2   ​    1 ​    or,    1−  c  2   v  2   ​   =  4 1 ​    

or, v=  2 3  

c=2.598×10^ 8  ms  −1  .