You observe is equal to f 2.0 x 10-15 erg cm2 s1 a at all wavelengths is the frequency (in hz) corresponding to wavelength 4000 a, and wavelength 8000 a? what is the flux density f of this object at each of those two frequencies, in units of erg em an s-1 hz17 -2

d is the correct answer

increase masses, decrease separation

i think the answer would be reserve.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!