9. a bicycle tire is spinning clockwise at 3.80 rad/s. during a time period of t = 2.35 s, the tire is stopped and spun in the opposite (counterclockwise) direction, also at 3.80 rad/s. calculate the tire's average angular acceleration. a. 7.63 rad/s2 b. 5.43 rad/s2 c. 2.53 rad/s2 d. 4.03 rad/s2 e. 3.43 rad/s2

True or false graphs must include scales that increase by the same amount

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.

What is the angular momentum of the bar about the axle?