A satellite orbits a planet in a circular orbit at an altitude (distance above the surface) of 1000km. The radius of the planet is 8000 km. The mass of the planet is 8 x 10^24 kg. What is the orbital speed?*

Problem1. A 20-kg satellite is circling the Earth (RE = 6.37 x10° m, MẸ= 5.95x1024 kg) with a period of 5.0 hours. (a)What is the radius of its orbit? (b) What is the gravitational force on the satellite? (c) Find is the orbital speed of the satellite as it circles the Earth?

The planet Saturn has a mass of 5.68 x 1025 kg and à radius of 58,200 km. Janus, a moon of Saturn, has a mass of 1.9 x 10¹8 kg and it orbits Saturn a distance of 151,400 km from the center of Saturn. Part A - How many hours does it take for Janus to orbit Saturn? VG ΑΣΦ @ C CAC ? Submit Provide Feedback Request Answer hours

Ex. The Hubble Space Telescope (HST) follows an essentially circular orbit, at an average altitude of 598 km above the surface of the earth. A) Determine the speed needed to stay in orbit in km/h B) Find the orbital period (the radius of the earth is 6.37 x 106 m)

Problem 6: Two satellites are in circular orbits around a planet that has radius 9 x 106 m. One satellite has mass 68.0 kg, orbital radius 7 x 107 m, and orbital speed 4800 m/sec. The second satellite has mass 84.0 kg and orbital radius 3 × 107 m. What is the orbital speed of this second satellite? Answer: 7332.1 m/sec. Problem 7: Planets Beyond the Solar System. On October 15, 2001, a planet was discovered orbiting around the star HD 68988. Its orbital distance was measured to be 1.05 × 1010 m from the center of the star, and its orbital period was estimated at 6.3 days = 5.44 × 105 sec . What is the mass of HD 68988? Express your answer in kilograms and in terms of our sun's mass (Msun =1.99 × 1030 kg) Answer: M = 2.31 × 1030 p kg. = 1.16MSun-

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An intergalactic spaceship arrives at a distant planet that rotates on its axis with a period of T = 31 hours. The mass of the planet is M = 2.1 • 1025 kg. The spaceship enters a circular orbit with an orbital period that is equal to the planet's period for the rotation about its axis, T.   a.  Enter an expression for the radius of the spaceship’s orbit.  b.  Calculate the orbital radius in meters.

A piece of space debris is travelling in an elliptical orbit around a planet. At its closest point to the planet, the debris is travelling at 5000ms. When the debris is 10000km from the planet, it travels at 5000kmhr. How close does the debris get to the planet in its orbit?

A satellite moves in a circular orbit a distance of 1.6×105m above Earth's surface.  Determine the speed of the satellite.

Let the average orbital radius of a planet be r. Let the orbital period be T. What quantity is constant for all planets orbiting the Sun? * T/R O T/R^2 O T^2 / R^3 O T^3 / R^2