A satellite revolves round the circular orbit of radius 7200 km. Find its speed and period of revolution. (Given : G = 6.67 x 10-11 Nm2 / kg², and mass of the earth = 6 × 1024 kg)

(a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 160 km above Earth's surface?  (b) What is the period of revolution?  Take the mass of earth as 5.98×1024 kg and the radius as 6.37×106 m

Two planets P1 and P2 orbit around a star S in circular orbits with speeds v₁ = 43.0 km/s, and v₂ = 59.2 km/s respectively. (a) If the period of the first planet P₁ is 700 years what is the mass, in kg, of the star it orbits around? × The gravitational force of the star on the planet supplies the centripetal force needed to keep the planet in its circular orbit. kg (b) Determine the orbital period, in years, of P2 2 × Consider the relationship between the orbital speed and the orbital period in terms of the known variables. yr

A communication satellite appears stationary from a place on the equator. Find the height of the satellite from the surface of the earth. G = 6.7 x 10-¹¹ M. K. S. units. Mass of earth × = 6 × 10²¹ kg, Radius of earth = 64000 km.

An undiscovered planet, many light-years from Earth, has one moon, which has a nearly circular periodic orbit. If the distance from the center of the moon to the surface of the planet is 2.405×105 km and the planet has a radius of 3375 km and a mass of 7.30×1022 kg , how long (in days) does it take the moon to make one revolution around the planet? The gravitational constant is 6.67×10-11  N·m2/kg2 .

The is a planet orbiting the sun.  Its mass is 9.3 x 10^22kg and it is traveling in a circular orbit at 9.5km/s.  The suns mass is 1.982 x 10^31 kg.  How far is the planet from the sun?

Scientists want to place a 2800 kg satellite in a circular orbit around Mars. They plarto have the satellite orbit at a speed of 2100 m/s. How far above the surface of Mars will the satellite orbit? Mmars = 6.5 x 10^23 kg mars = 3.40 x 10^6 m G= 6.67 x 10^-11 N-m2/kg?

A satellite is orbiting earth  at a distance of  3.1 X 105 m above the surface of the Earth. What is its orbital speed? (G = 6.67 X 10-11 Nm2/Kg2; M of Earth = 5.97 x 10 24 kg; Radius of Earth = 6.37 x 10 6 m)

The maximum distance of the earth from the sun is 9.3 x 107 miles. The minimum distance is 9.1 x 107. The sun is at one focus of the elliptical orbit. Find the distance from the sun to the other foci of the ellipse.

A satellite is in a circular orbit around the Earth at an altitude of 3.42 x 106 m. (a) Find the period of the orbit. (Hint: Modify Kepler's third law so it is suitable for objects orbiting the Earth rather than the Sun. The radius of the Earth is 6.38 x 10° m, and the mass of the Earth is 5.98 x 1024 kg. (b) Find the speed of the satellite. km/s (c) Find the acceleration of the satellite. m/s? toward the center of the earth