Stars have no albedo, because they give off their own light, and albedo is a measure of reflected light. Even with such a low albedo of 0.07 the moon's rocks still reflect a lot more sunlight than does the adjacent empty space. The Earth is thus capturing a flux of:





1400 * 0.07 * (pi * R^2) / (2 * pi * d^2)



Or roughly:



1400 * (1 / 1400000)



In other words, moonlight is 1400000 times fainter than sunlight.

Did u appear for NUAA ???..this was the question der ..qu no 5 . ...I think I am right abt this . I never miss a question on albedo flux .

Hold on a second guys.....the torque of normal force acting on the cubical block should be

Mg (a /2) sin alpha ....................not (1/2) Mg a sin alpha (in the understanding terms...acceleration abt the centre gets halved ..not the resultant torque ) !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The normal force acting on the block about the centre should be M g only .

9.9 / 10