Compare the magnitude and direction of f with the magnitude and direction

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

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?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot