I need some help with some review questions for the test. I am trying to check the answers I get with the ones the teacher provided, bit I'm getting stuck. Knowing which equations to use etc... would be really helpful. What is the maximum weight an aircraft with a wing area of x m^2 can lift if the air passing beneath the wing moves at y m/s and the air above the wing moves at z m/s? Bernoulli's principle I know, but I don't know how to relate it to the wing area. A barge with a horizontal cross-sectional area of x m^2 at the water line carries oil with a density z, which is less than that of water. When the oil is loaded the ship goes up y meters. How much oil was delivered? I set bouyant force = mg but got stuck Suppose a person can reduce the pressure in their lungs to x mmHG below atmospheric pressure. What is the maximum height that water can be drawn up a straw? Just need to know how to do these problems. Any help appreciated.