At what speed would the mass of electron be double its rest mass?

Notice that it does not even matter if we talk about the mass of the electron or any other particle. This holds for every massive particle (). This is true in general; the speed at which the mass of a particle gets doubled with respect to its rest mass is around of the speed of light.

How fast must an electron move such that its rest mass becomes equal to the rest mass of a proton?

1.65 km/s; b.

Why is the rest mass of a photon zero?

The rest mass is the mass of a particle (in our case the photon) as measured by an observer who sees the particle still and with zero speed. But according to special relativity, light ALWAYS travels with the light speed c, and is NEVER at rest. And so it has zero REST mass.

What should be the speed of the body so that its mass is three times its rest mass?

The correct option is (C) 2.83 × 10 8 (m/s).

At what speed is a particle moving if the mass is equal to three times its rest mass * 1 point?

What is the rest mass energy of an electron?

The rest mass energy of an electron is 0.511 MeV, so the threshold for electron-positron pair production is 1.02 MeV.

What is rest mass of an electron?

The electron rest mass, symbolized m e , is the mass of an electron as measured when its speed is zero relative to an observer. The electron has extremely small mass — it’s almost 2000 times less massive than the proton — at approximately 9.10956 x 10 -31 kilogram (kg) or 9.10956 x 10 -28 gram (g).

Is the rest mass of a photon zero?

The photons are said to be chargeless and massless particles that travel at the speed of light. So the rest mass of a photon is taken to be zero. This can be proved from Einstein’s special theory of relativity. Hence the photons have a rest mass of zero.

What subject is E mc2?

E = mc2, equation in German-born physicist Albert Einstein’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.

What is the mass of an electron at speed v?

The mass of an electron at speed v is m= 1−v 2/c 2 m 0 where m 0

What is the mass of an electron at rest?

An electron at rest has the mass of 9.11×10^-31. At what speed would the electron be doubled?

How do you calculate the speed of a speeding proton?

Any mass, not just a speeding proton will double at a certain speed which will be a certain fraction of c. You do not need the exact size of the mass to determine the speed, as doubling of the mass will make the rest mass cancel out in the equation as shown below : The relativistic mass equation is M = m/ (1 – v^2/c^2)^1/2.

How do you find the speed of a particle with momentum?

In this case, p is the relativistic momentum of the particle, c is the speed of light, and m o is the rest mass of the particle. We can set this expression equal to twice the energy from the rest mass and then solve to find the speed we’re looking for: Now, we need to convert from momentum to speed.