Explaining Magnetic Domains
Taylor places a nail on a bar magnet. The nail sticks to
the magnet when lifted up off the table. She touches a
paperclip to the nail and it sticks to the nail. Explain what
happened to the magnetic domains of the nail before and
after touching it to the bar magnet.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

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.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above