PLEASE HELP MEE Ruben lifts a 125 Newton box up to the top of a shelf 2 meters high. How
much work (in Joules) did Ruben do?

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

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?

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.