A satellite orbits the earth a distance of 1.50 107 m above the planet's surface and takes 8.65 hours for each revolution about the earth. The earth's radius is 6.38 106 m. The acceleration of this satellite is closest to
A) 0.870 m/s2.
B) 0.0690 m/s2.
C) 9.80 m/s2.
D) 2.72 m/s2.
E) 1.91 m/s2.
Question 2
The moons of Mars, Phobos (Fear) and Deimos (Terror), are very close to the planet compared to Earth's Moon. Their orbital radii are 9,378 km and 23,459 km respectively.
What is the ratio of the orbital speed of Phobos to that of Deimos?
A) 1.582 B) 0.2528 C) 3.956 D) 2.858 E) 0.3998
Apparent and True Orbits of Alpha Centauri.
scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
Surface Coal Mine Reclamation
Surface Temp Inversions
Earth Atmosphere
Water strider (Gerris remigis) on water surface, showing surface tension.