Physics (AS & A Level) · Feb / March 2017 · Paper 42 · Question 12
9702
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12(a)[2]
12(b)(i)[1]
12(b)(ii)[3]
1 change in mass = 238.05076 – (234.04357 + 4.00260) = 4.59 × 10–3 u 2 either E = mc 2 = 4.59 × 10–3 × 1.66 × 10–27 × (3.00 × 108) 2 = 6.9 × 10–13 J or 1u = 931 MeV E = 4.59 × 10–3 × 931 × 106 × 1.6 × 10–19 (C1) = 6.8 × 10–13 J (A1)
12(b)(iii)[2]
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