Problem: the velocity of an object is the distance it travels per unit time. suppose the velocity of a gliding bird is measured to be . calculate the time it will take the bird to travel . be sure your answer has a unit symbol and the correct number of significant digits. solution: write down the definition of velocity. solve for time. put in the data given. convert units. use the calculator. round to the correct number of significant digits. no mistakes

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.