The velocity of a planet is the greatest at perigee. a) True b) False
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The velocity of a planet is the greatest at perigee.
a) True
b) False
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- Assume that planet A has radius RA and mass MA planet B has radius Rg and mass Mg. Let gA and g; are the accelerations due to gravity at their surfaces, respectively. If MA = Mg, and RA = 2Rg The ratio (ga/gB) is: and !! %3D А. 1 В. 2 C. 4 D. 0.5 E. 0.25The moon's period of revolution around the Earth is 27.3 d. How far away is the moon from the surface of the Earth? O A) 1.33× 107 m B) 3.83 × 108 m C) 3.77 × 108 m D) 4.88 × 10⁹ mB) what is the period of the orbit, in hours?
- If the density of the planet is doubled without any change in its radius, how does g change on the planet? a) It remains the same b) It is tripled c) It reduces d) It is doubledPlanet 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…Мon Gravity: on off O Gravity Force Velocity > Path U Grid Star Mass 0.5 Our Sun 1.5 2.0 Planet Mass 0.5 Earth 1.5 2.0 Fast 392 Earth Days Normal Clear Slow
- The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is ______. A) g/3 B) g/4 C) g/9 D) g/2Determine the angle at which a particle in Jupiter's circular orbit experiences an attraction from Jupiter that is 0.75 times the attraction from the sun. Use Table D/2 of Appendix D as needed. Sun Jupiter Answer: 0 i6.
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