5. A satellite has an orbital radius 100 km above the Earth's surface. a. What is the špeed of the satellite? b. How many minutes does it take the satellite to complete one orbit?
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- 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 vewA circular disk of radius 0.010 m rotates at a rate of 5.0 rev/s. What is the acceleration of a point on the edge of the disk? a. 0.31 m/s2 b. 1.6 m/s2 c. 9.9 m/s2 d. 2500 m/s2 e. zero m/s2A 2kg toy is moving in a circle of radius 2.5 m with a speed of 3m/s.Calculate the centripetal acceleration of the toy? choose one correct answer with the correct units. A. 3.6 m/s^2 B. 1.2 m/s^2 C. 3.6 m/s D. 0.833 m/s^2
- 4. Astronomers use a telescope to watch a small moon orbit a planet in our solar system. They find that it takes the moon 14 days to go around the planet once, and they estimate the radius of the moon's orbit is about 4.2 x 10² meters. a. From this information, estimate the mass of the planet. b. Using the mass you found in part (a), estimate the free-fall acceleration on the planet's surface if it has a radius of 3.8 x 106 meters.7. a. Planet Alpha has a mass of 2.34 × 1025 kg and a radius of 5.67 × 107 m. What is the gravitational acceleration on the surface of the planet? b. What is the gravitational potential energy of an 891 kg object when it is 1.23 × 108 m from the center of the planet?