momen

a woman is draining her fish tank by siphoning the water into an outdoor drain the rectangular tank has footprint area A and depth H . the drain is located a distance D below the surface of the water in the tank , where D>>H . the cross section area of th...

A small bicycle pump is filled with helium (He) gas. With constant pressure, the gas is forced out through a small aperture in two seconds. The same pump is filled with hydrogen bromide (HBr) gas. Using the same pressure, how long will it take to force ou...