What must be the height of water column that the atmospheric pressure can support in water barometer? [Density of water = 1000 kg/m', g = 9.8 m/s2, 1 atm = 1.01 10% N/m²].​

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

How do we measure or think of speed in the united states?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)