A stadium of soccer supporters do the “stadium wave” to keep their spirits up during a dull 0-0 draw. The stadium has a circumference of 450.0 meters, and it takes 12.0 seconds for the wave to travel all the way around the stadium. What is the stadium-wave’s average velocity? The answer should have 3 significant figures.

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.