If a planet has 9 times the radius of the Earth, but has the same density as the Earth, what is the gravitational acceleration at the surface of the planet? (g = 9.8 m/s2)
a. 29.4 m/s2
c. 265 m/s2
b. 88.2 m/s2
d. 39.2 m/s2
Question 2
An Earth satellite is orbiting at a distance from the Earth's surface equal to two Earth radii. At this location, the acceleration due to gravity is what factor times the value of g at the Earth's surface?
a. There is no acceleration since the satellite is in orbit.
b. 1/9
c. 1/4
d. The answer is not given.
Relationship between fruit radius and beak length in populations of native and introduced species of
Body size and population density of herbivorous mammals
Solar particles interact with Earth's magnetosphere. Sizes not to scale.
Risks of infectious disease increase in (a) high-density agricultural populations compared to (b) lo
Planet Earth compared to all its water and air!
Orbital Motion of Earth and Other Planets