a weather balloon of known initial volume is released. the air pressures at its initial and final altitudes are known. why can’t you find its new volume by using these known values and boyle’s law?

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?