Quantcast
[ 3 / biz / cgl / ck / diy / fa / g / ic / jp / lit / sci / tg / vr / vt ] [ index / top / reports / report a bug ] [ 4plebs / archived.moe / rbt ]

Due to resource constraints, /g/ and /tg/ will no longer be archived or available. Other archivers continue to archive these boards.Become a Patron!

/sci/ - Science & Math

Search:


View post   

[ Toggle deleted replies ]
>> No.9809200 [View]
File: 45 KB, 821x869, 1510158230500.jpg [View same] [iqdb] [saucenao] [google] [report]
9809200

I know this is probably a super brainlet question, but whenever I try to calculate the mass after beta decay I mess up.

Say I have hypothetical nucleus with the mass 20000MeV. It goes through beta decay and gives off an electron with the maximum kinetic energy of 2MeV. The mass of the new nucleus should be 20000 - 2 - 0,511 (mass of an electron) MeV = 19997,489 MeV.

My textbook says you should only subtract the 2MeV of kinetic energy. Why shouldn't you also subtract the mass of the electron? The original nucleus loses an electron as well as the other energy, right? Please help a brainlet out.

>> No.9374578 [View]
File: 45 KB, 821x869, 1510158230500.jpg [View same] [iqdb] [saucenao] [google] [report]
9374578

>>9374228
I am grow upp fren

>> No.9288012 [View]
File: 45 KB, 821x869, 1510158230500.jpg [View same] [iqdb] [saucenao] [google] [report]
9288012

>>9287980
>distrubitions
no bully plz.



Navigation
View posts [+24] [+48] [+96]