How much work is required to bring a 600 kg space rock on the moon to a height of 400 km above the surface of the moon?A planet is in a circular orbit around a star which has a mass of 5.88 x 10^32 kg. If the radius of its circular orbit is 1.31 x 10^12 m, what are its orbital speed and period?
3.16 108 j
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A rock is dropped from a height of 40 m above the surface of a planet with a mass of 3.08 x 10^24 kg. If the rock reaches the ground in 4.7 s, what must be the radius of the planet? A rock is dropped from a height of 6000 km above the surface of Earth. What is its speed when it reaches the Earth’s surface? Assume no friction forces.
7 53 106 m
7780 Ms
What is the total mechanical energy (kinetic and potential) of a 340 kg satellite orbiting a 3.21 x 10^25 kg planet at a distance of 6.54 x 10^7 m from the planet’s centre?
5.57 109 J
How much work is required to bring a 600 kg space rock on the moon to a height of 400 km above the surface of the moon?
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A planet is in a circular orbit around a star which has a mass of 5.88 x 10^32 kg. If the radius of its circular orbit is 1.31 x 10^12 m, what are its orbital speed and period?
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A rock is dropped from a height of 40 m above the surface of a planet with a mass of 3.08 x 10^24 kg. If the rock reaches the ground in 4.7 s, what must be the radius of the planet?
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A rock is dropped from a height of 6000 km above the surface of Earth. What is its speed when it reaches the Earth’s surface? Assume no friction forces.
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What is the total mechanical energy (kinetic and potential) of a 340 kg satellite orbiting a 3.21 x 10^25 kg planet at a distance of 6.54 x 10^7 m from the planet’s centre?
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