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A satellite in circular orbit around Earth has a period of 90 minutes. The satellite is then joined by a space craft having the same mass. After the space craft docks with the satellite, the period of the orbit will be:
In a parallel universe where the universal gravitational constant G was greater than in our own universe, the effect on satellites, assuming that they exist in the same orbits, would be that they:
A satellite with an orbital radius r around Earth fires its engines to change its orbit. Once in the new orbit the satellite would therefore have:
Which of the following statements about escape velocity is FALSE?
The Hubble Space Telescope (HST) of mass 11 000 kg is in circular orbit 600 km above the Earth (rE = 6380 km). The centripetal force acting on the HST is:
A satellite orbits the Moon with an orbital radius of 10,000km. Compared to the same satellite with an identical orbital radius orbiting Earth, the satellite orbiting the Moon will:
A space probe orbits a distant planet at an altitude 100 km above the planet’s surface. The planet has a mass equal to Earth; the probe’s orbital period is one hour. The radius of this new planet is closest to:
A satellite’s gravitational potential energy is always increased by…