Recent content by sabalo

Generally speaking, I go to freeexampapers.com. They have exams for almost every year of examination at least within the past decade, from all the major exam boards, IB, A-level etc.

If I recall correctly, once you have obtained the mass defect, you should be multiplying by 931.5 to find the mass equivalent to the energy. If I'm right, you've made a mistake somewhere. I'm on my iPod at the moment, so there isn't a great deal I can tell you, but when I get to a computer...