Jerson is 1.9 m tall. where should he place the top of a mirror on the wall so he can see the top of his head? assume his eyes are 4.8 cm below the top of his head. find a minimal vertical distance from the level of the person’s eyes to the top of the mirror.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. the ice dissolves oxygen from the air, forming a denser crystalline matrix. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.