someone tried helping me but didnt get the correctanswer.. i think i only have o
ID: 1729626 • Letter: S
Question
someone tried helping me but didnt get the correctanswer..i think i only have one or two tries left so i really need to getthe right answer
someone please help!! I couldn't find any solution in the textbook help either
So can someone please show me the steps how to do it thank you in advance and I will rate you a lfiesaver!! An electron has a speed of 0.62c.
(a) Find the speed of a proton that has thesame kinetic energy as the electron.
c
(b) Find the speed of a proton that has the same momentum as theelectron.
km/s someone tried helping me but didnt get the correctanswer..
i think i only have one or two tries left so i really need to getthe right answer
someone please help!! I couldn't find any solution in the textbook help either
So can someone please show me the steps how to do it thank you in advance and I will rate you a lfiesaver!! An electron has a speed of 0.62c.
(a) Find the speed of a proton that has thesame kinetic energy as the electron.
c
(b) Find the speed of a proton that has the same momentum as theelectron.
km/s c
(b) Find the speed of a proton that has the same momentum as theelectron.
km/s
Explanation / Answer
You have to first find the relativistic kinetic energy of theelectron: . KE = ( -1) mc2 where mc2 = rest energy ofelectron = 0.5110 MeV . and = (1 -u2/c2)-1/2 = ( 1 - 0.622)-1/2 = 1.274532 so , KE of electron = (1.274532 - 1) * 0.5110 = 0.140286 MeV . Now do the same for the proton, workingbackward... . KE = ( -1) mc2 where mc2 = rest energy of proton= 938.272 MeV . 0.140286 = ( - 1)* 937.272 . 0.000149515 = ( - 1) = 1.000149515 . 1.000149515 = (1 -u2 / c2 )-1/2 . 0.999701 = 1 - u2/c2 u/c = 0.01729 . speed of proton = 0.01729 c .Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.