A 2 kg block of metal with a specific heat of 100 J/kgºC is dropped from rest at a height of 100 m above the ground. If half of the initial potential energy of the block is converted to heat energy in the block as it falls, what is the temperature change of the block?

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

The slope of a velocity time graph over any interval of time gives the during that interval

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? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.