What is the speed of an electron whose kinetic energy equals its rest mass?
What is the speed of an electron whose kinetic energy equals its rest mass?
28. What is the speed of an electron whose kinetic energy equals its rest mass?
An electron with rest energy of 0.511MeV moves with speed u=0.2c. Find its total energy, kinetic energy, and momentum.
A particle has a kinetic energy equal three-quarters its rest mass energy. What is the speed of this particle? (Answer in terms of c)
A ruler has rest length of L0, moves by light speed approximately, its kinetic energy equals 4 times the rest kientic energy. Find the new length of the ruler? A) ½L0 B) ¾L0 C) L0 D) ¼L0
2. Electron-positron annihilation A positron with kinetic energy equal to twice its rest mass energy is incident on an electron at rest The positron and electron annihilate creating two photons. One photon goes off at an angle of 30 with respect to the incident positron. Compute the energies of the two photons and find the direction in which the second photon travels 2. Electron-positron annihilation A positron with kinetic energy equal to twice its rest mass energy is incident on...
6. The kinetic energy of an electron is five times its rest energy. (a) Calculate the electron total energy in units of Me V (b) Calculate the electron momentum in units of MeV/c. (c) Calculate the speed of the electron in units of c.
An electron has a speed of v = 0.939 c. What is its total energy (rest energy plus kinetic energy)? (in MeV)
At what speed will an object's kinetic energy be 23 % of its rest energy?
A) What is the speed of an electron with kinetic energy 780 eV ? B) What is the speed of an electron with kinetic energy 0.40 keV ?
B. An electron moves at a speed of 0.995c. Calculate its rest energy, total energy, and kinetic energy.