What phases of matter are fluids?
(pressure – 3 min) #1 Questions any matter that is able to flow. Fluids exert pressure because of the motion of their particles. Example: Air molecules colliding with the inside of a basketball press against the material. The bounce of the ball can be adjusted by adding or removing air molecules. With more air in the ball, it does not compress as much when dribbled and will bounce higher. With less air, there is less pressure against the inside of the ball and it will bounce less. Can a basketball with no air in it be dribbled? (measuring air pressure – 1 min) #2 Questions The pressure exerted by air at sea level is 10.13 N/cm2. • 1 Newton is the force needed to accelerate one kilogram of mass at one meter/second/second. • In other words, 1 N = 1 kg X 1 m / s2 • Atmospheric pressure is commonly reported by the weatherman as “barometric pressure”. The units reported are inches of mercury, obtained with a barometer. mercury barometer aneroid barometer Practice problem: At sea level, what
