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Comparing the earth's force of attraction for an object that is a) at the surface of the earth b) 160 km above the earth's surface Use suitable data from the
AQA Formula booklet on page 1 to evaluate * \frac{F_{160}}{F_{\text {sufface }}} \text {, where } F_{160}=\text { Force on the object } 160 \mathrm{~km} \text { above the surface of the earth } O 1.050 0.823 O 0.900 O 0.952 O 0.980
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