PHYSICS PROB!!!

[omaaaar]

could you help me with these questions

 

[22shimmer22girly]

that's what IG students r for =D

true

 

[shazmina]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w05_qp_1.pdf
Question 21 the answer is A could you explain it in detail
And Question 39 of the same paper that why the number of neutrons becomes less

i guess i inboxed u de answer fr dis questions...lol

 

[omaaaar]

Yes I just now read it