Physics (AS & A Level) · May / June 2016 · Paper 22 · Question 3
9702
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3(a)[1]
Young modulus = stress / strain [1]
3(b)(i)[3]
E = (F × l) / (A × e) or e = (F × l) / (A × E) e ∝ 1 / E or ratio eC / eS = ES / EC or (1.9 × 1011) / (1.2 × 1011) or 19 / 12 (ratio =) 1.6 (1.58) [3]
3(b)(ii)[1]
two straight lines from (0,0) with S having the steepest gradient [1]
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