Q1 - The first official artificial satellite was launched into an orbit 200 km above the Earth, moving around the Earth once every 88 minutes. Use this data to calculate the
mass of the Earth.
G= 6.67x10-11 Nm²kg²
Radius of the Earth = 6380 km
BIU
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Q2-A satellite orbits around the Earth in a circular orbit.
(a) Calculate its speed and its time period if its height is 1000 km.
(b) Calculate its speed and height if its time period is exactly 4 hours.
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