Multiple Choice
What is the ratio of the light energy that falls on a unit area of Mercury's surface compared to that falling on a unit area of Earth's Moon if Mercury is at 0.4 AU and the Moon is at 1.0 AU from the Sun?
A) 1
B) 6.25
C) 2.5
D) 16
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q198: In the spectral classification scheme, what designation
Q221: Who was the first person to measure
Q237: According to the mass-luminosity relation shown in
Q238: We are about 8000 parsecs from the
Q239: How do astronomers measure the masses of
Q240: Why does the star Bellatrix in Orion
Q242: Which statement about measuring the mass of
Q244: The object you are observing through a
Q245: The process of evolution of stars in
Q246: In what fundamental way do we (and