College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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I. Answer the following questions
A father, whose mass is 82.5 kg, is watching her daughter sleep. He exerts 6.45 x 10-8 N of gravitational force to her 25kg daughter. How far is her father from her?
A. 146 meters
B. 1.46 centimeters
C. 14.6 meters
D. 146 centimeters
A satellite is moving in a circular orbit at a height of 2700 km above the surface of the Earth? What is the period of this satellite in hours? Mass of Earth = 5.972 X 1024 kg. Radius of Earth = 6.38 x 103 km
A. 22.3 hours
B. 23.9 hours
C. 2.23 hours
D. 2.39 hours
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- 7. A 75 kg astronaut orbits the moon at a distance of 7.0 x 106 m from its center. (Mass of moon = 7.35 x 1022 kg) a. What is the force acting on the astronaut by the moon? b. How fast is the astronaut orbiting around the moon?arrow_forwardIn 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term "hot Jupiter"). The orbit was just 1/9 the distance of Mercury from our Sun, and it takes the planet only 3.09 days to make one orbit (assumed to be circular). a. What is the mass of the star? Express your answer in kilograms and as a multiple of our Sun's mass. b. How fast (in km/s) is this planet moving?arrow_forwardA 2,200 kg satellite orbits the Earth at an altitude equal to half the Earth's radius. a. Determine the satellite's orbital velocity. b. Determine the satellite's period of revolution in minutes. c. Calculate the satellite's gravitational force at this altitude. d. Calculate the satellite's centripetal acceleration.arrow_forward
- 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.arrow_forward28. Which best describes the gravitational force? a. linear function of distance b. an infinite-range force c. applicable only to our solar system d. sometimes repulsivearrow_forwardThe radius and mass of a planet are 5.39E+06_m and 2.56E+25_kg, respectively. A spaceship is in orbit at a distance of 1680_km above the surface of the planet. Find the orbital speed of the ship. 4. 12990_m/s 15540_m/s F. А. 13670 _m/s D. В. 14650_m/s E. C. 14180_m/s 12170_m/sarrow_forward
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