For the same force why does a long cannon impart more speed to a cannonball than a short cannon

Air flows upward in the wick of a lantern because of the liquid property called

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?