The two forces F1r and F2r shown

in Fig. 4–52a and b (looking down)

act on an 18.5-kg object on a

frictionless tabletop. If F1 = 10.2 N

and F2 = 16.0 N, find the net force

on the object and its acceleration for

(a) and (b).

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!