Question

A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like protons or electrons. You may have seen it used to make human hair stand on end or produce large sparks. One application of the Van de Graaff generator is to create x-rays by bombarding a hard metal target with the beam. Consider a beam of protons at 1.90 keV and a current of 4.95 mA produced by the generator. (a) What is the speed of the protons (in m/s)?

Answer 1

Answer:

603383.67253 m/s

Explanation:

m = Mass of proton = $1.67\times 10^{-27}\ kg$

K = Kinetic energy = 1.9 keV

$1\ ev=1.6\times 10^{-19}\ J$

Velocity of proton is given by

$v=\sqrt{\frac{2K}{m}}\\\Rightarrow v=\sqrt{\frac{2\times 1.9\times 10^3\times 1.6\times 10^{-19}}{1.67\times 10^{-27}}}\\\Rightarrow v=603383.67253\ m/s$

The speed of the protons is 603383.67253 m/s