lost about 10 marks due to my careless & dumb dumb brain!!
just realised it after exam has finished 4hours.. -.-"
i'm stupid..
god bless me.
let me remind myself for the next real exam..
for the charge of 2 protons.. i have to multiply the 1.6E-19 with 2!!
remember to multiply it!!!
if 90 protons.. multiply the 90 with 1.6E-19!!
more mistakes to go..
more questions to do wrongly..
and i shall upset myself by my stupid brain..
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