When parallel light rays exit a concave lens, the light rays
A) Diverge
B) Converge
C) Come together
D) Remain parallel

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. 

it would be kevlar ^^

prndulum needs thread, weight clock to time swings