[داعية المستقبل]

الله يعطيك العافية .... ماتقصر

عندي ثلاث اسئلة ما فهمتها
الاسئلة هي :

a- An electron's speed is doubled from 0.2c to 0.4c . By what ratio does its momentum increase ? b- What happens to the momentum ratio when the electron's speed is doubled again from 0.4c to 0.8c ?0



A particle has a kinetic energy 20 times its rest energy. Find the speed of the particle in terms of c ?0



How much work (in MeV) must be done to increase the speed of an electron from1.2*10^8m/s to2.4*10^8m/s?(1eV=1.602*10^-19 J