The percentage increase in the rest mass of an electron when it is moving at a speed of 0.6 c where c is the speed of light, is

Calculate the de Broglie wavelength of an electron moving with a speed that is 1% of the speed of light.

An electron at rest has a charge of 1.6 × 10^(–19) C. It starts moving with a velocity v = c/2, where c is the speed of light, then the new charge on it is -

Calculate the de Broglie wavelength associated with an electron moving with a speed 0.1% of the speed of light in free space.

An electron with rest mass m_(0) moves with a speed of 0.8c.Its mass when it moves with this speed is…….

A famous relation in physics relates moving mass m with the rest mass m_(0) of a particle in terms of its speed v and the speed of light c. This relation first arose as a consequence of special relativity by Albert Einstein. A boy recalls the relation almost correctly but forgets where to put the constant c. He writes : m=(m_(0))/((1-v^(2))^(1//2)). Guess where to put the missing c.

The mass of an electron at rest is 9.1 xx10^(-31) kg. the mass of an electron, when it is moving with a speed of 2.4xx10^(8) m/s is (c=3xx10^(8) m//s)

Find the speed at which the mass of an electron is double of its rest mass.