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.
Humanmade pollutants may be driving the expansion of the Earth’s tropical belt seen
The Sun as it appears from the surface of the Earth at sunrise.
Dwarf Planet Eris
Heaven or earth?
Physics - Density and Pressure
Physics - Pressure, Density, Pascal's Principle