A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
a. GmM/(4R)
b. GmM/R
c. GmM/(2R)
d. GmM/(3R)
e. 2GmM/(5R)
c
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A) Mercury, Venus, Earth, Moon, Mars B) Mercury, Moon, Venus, Earth, Mars C) Moon, Mercury, Venus, Earth, Mars D) Moon, Mercury, Mars, Venus, Earth E) Mercury, Moon, Mars, Earth, Venus
What is the primary basis upon which we divide the ingredients of the solar nebula into four categories (hydrogen/helium; hydrogen compound; rock; metal)?
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Characteristics of Waves: What is the wavelength of the wave shown in the figure?
A. 8 m. B. 4 m. C. 2 m. D. 1 m. E. It cannot be determined from the given information.
Newtonian physics tells us that Kepler's second law is a result of the conservation of ____
a. angular momentum b. linear acceleration c. energy d. mass e. velocity