Expression of Force

Are electrons relativistic?

What is the relativistic mass of an electron?

What is the difference between rest mass and relativistic mass?

How is relativistic mass derived?

What is the relativistic force?

According to Einstein’s Special Theory of Relativity, laws of physics can be formulated based on inertial frame of reference.

 An object in motion has a mass of $12 \mathrm{kg}$ and travels in the air with a velocity $0.82c$. What would be its rest mass in $\mathrm{kg}$?

As an object approaches the speed of light, its mass becomes_____.

According to the special theory of relativity, physical laws are the same in frames of reference which 

The speed of light in glass is less than $c$. Why is this not a violation of the second postulate of relativity?

Cotyledons are also called-