If you drop your keys, their momentum increases as they fall. Is the momentum of the keys conserved, or does the momentum of the universe increase as the keys fall? Explain.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.