Physics · May / June 2023 · Paper 42 · Question 10
0625
As printed in the paper
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10(a)[2]
v = 2πr / T
r = (average) radius of the orbit AND T = (orbital) period
10(b)[1]
rays from Sun strike the country at different angles through the year
OR
rays from Sun strike the country for different number of hours per day through the year
10(c)[4]
(first space:) red supergiant
(second space:) nebula
(3rd and 4th spaces:) neutron star
black hole
10(d)[2]
1.6 × 109 (light-years)
H0 = v / d OR (d =) v / H0 OR (d =) [33 000 × 103] / [ 2.2 × 10–18 × 9.5 × 1015]
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