a piece of aluminium of mass 260g is cooled in a freezer. it is then dropped into 140g of water at 5°c, causing 4.0g of water to freeze.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

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?