When electron is accelerated through 500 kev, what is the percentage increase in mass?

An electron is accelerated through a potential differrence of 300 V. What is its energy in electron volts.

Calculate the momentum and De Brogile wavelength of the electrons accelerated through a potential difference of 56V. Mass of electron is 9.1 xx 10^(-31) kg.

An electron is accelerated through a potential difference of 1000 V. What is its KE in MeV?

The de-Broglie wavelength associated with an electron accelerated through a potential difference V is lambda . What will be wavelength when accelerating potential is increased to 4V?

Two spheres are made of same metal had and have same mass. One is solid and the other is hollow. When heated to the same temperature, percentage increase in diameter will be