Physics · May / June 2017 · Paper 22 · Question 11
5054
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The question as text
One source of background radiation is cosmic rays. The cosmic rays that enter the Earth’s atmosphere are known as primary cosmic rays. Most of these rays are fast-moving protons or fast-moving alpha-particles. Both the Earth’s magnetic field and the Earth’s atmosphere reduce the number of primary cosmic rays that reach the Earth’s surface.
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11(a)(i)[1]
11(a)(ii)[1]
11(a)(iii)[2]
11(a)(iv)[1]
11(a)(v)[2]
11(b)(i)[2]
11(b)(ii)[2]
11(b)(iii)[1]
11(c)(i)[2]
11(c)(ii)[1]
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