There is a head of 0.25 m above the top of a rectangular orifice that is 0.4 m wide and 0.3 m deep. Given that the coefficient of discharge is 0.61, calculate the rate of discharge from the orifice. Give your answer in m3/s correct to 3 d.p. Discharge (m3/s) Round your answer to 3 decimal places.

True or false: Osmotic pressure can be explained by the difference in fugacities

Suppose that exactly half of the annular volume between concentric, horizontal cylinders is filled with a liquid and half with a gas, as shown below on the left. When the inner cylinder is rotated at an angular velocity , it is found that one interface rises to a height H above the other. The gap between the cylinders is sufficiently thin (W<< R) that local Cartesian coordinates can be used, as shown on the right. (For clarity, the gap width is exaggerated on the left.) All of the following questions concern flow in the liquid, which is Newtonian with constant properties. g R+W Gas Ω Liquid R H y Enlargement of liquid-filled gap X W ΩR Fixed (a) Assuming steady, fully developed flow, determine Vx(y) in the liquid in terms of dp/dx. (At this point, dp/dx is unknown.) (b) Relate dIP/dx in the liquid to H. You can assume that the absolute pressure in the gas is nearly constant (P = Po) and that surface tension is negligible. (c) Calculate H. That is, relate H to the rotation rate (),…

A ventilation opening in a room is 2 feet by 3 feet.  Air flow out of the opening is measured at 75 feet per minute.  Calculate the CFM rate.