A solid wood door 1.00 mm wide and 2.00 mm high is hinged along one side and has a total mass of 43.0 kgkg . Initially open and at rest, the door is struck at its center by a handful of sticky mud with mass 0.600 kgkg , traveling perpendicular to the door at 14.0 m/sm/s just before impact.

A) Find the angular speed of the door. B) Does the mud make a significant contribution to the moment of inertia?

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.

Aball horizontally thrown from a cliff at 8m/s

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?