An orbiting satellite is in a circular orbit 300 miles above the earth's surface. Determine the velocity of the satellite. Assume the radius of the earth is 3960 miles. a) 16,980 mph Ob) 17,018 mph

Current Attempt in Progress A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.35 x 104 m/s, and the radius of the orbit is 3.47 x 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 9.31 x 106 m. What is the orbital speed of the second satellite? Number i eTextbook and Media Save for Later Units Attempts: unlimited Submit Answer

A satellite of mass 200 kg is launched from a site on Earth’s equator into an orbit 200 km above the surface of Earth. a. What is the satellite’s speed before it’s launched (in m/s)? (Hopefully, it’s moving along with the surface of the Earth as the Earth rotates.) b. What is the satellite’s speed in its orbit (in m/s)? (Remember there is only onespeed a satellite can have in order to maintain a stable circular orbit with agiven radius.) c. Assuming a circular orbit, what is the orbital period of this satellite? (In other words, how long (in hours) does it take for the satellite to complete one orbit?) d. What is the minimum energy (work) necessary to place the satellite in orbit,assuming no air friction? (Remember, work is the amount of energy added tothe system, and the total energy of the system is a combination of kinetic andgravitational potential energies.)

An 800 kg satellite orbits Earth and take one day for complete orbit. Earth has a radiu 6,372 km and a mass of 5.972 x 10^24.   A. If the radius of orbit is constant, find the altitude of the satellite above Earth's surface. B. Find the orbital speed of the satellite  C. The satellite suddenly turns off, stops moving and heads straight towards the surface of Earth. At what speed will the satellite crash into the Earth's surface? (Hint: Use energy conservation)

B) what is the period of the orbit, in hours?

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Planet X with a radius of 4.0 Rearth⊕ is found orbiting a star of mass 0.80M⊙ . The eccentricity of its orbit is 0.05, and at its farthest approach to the star, it is 0.63 AU away, while at its closest approach to the star, it is 0.57 AU away.  a. How long does it take Planet X to make a complete orbit around its star in years? b.The semi major axis of the planet is changed such that its closest approach to the star is now 2.9 AU. Would the gravitational force exerted by the star on Planet X increase or decrease? By what factor? Would the gravitational force exerted by Planet X on the star increase or decrease? By what factor?  c. The mass of the star was increased to 2.4M⊙ . Would the gravitational force exerted by it on Planet X increase or decrease? By what factor? Would the gravitational force exerted by Planet X on the star increase or decrease? By what factor?   d. What must the mass of Planet X be in Mearth⊕ such that an astronaut on its surface would have the same weight as…

5. A satellite has an orbital radius 100 km above the Earth's surface. See #4 for a. What is the speed of the satellite? b. How many minutes does it take the satellite to complete one orbit? t.docx 787 Ke vew

What would be the mass of a 60-kg astronaut on a planet with the same density as Earth and having twice Earth's radius? a.240 kg  b. 120 kg  c. 60 kg                                   d. 30 kg