1. as shown in the figure, the object moves along the curve from point a to point b. regarding the movement of the object in the ab segment, the following statement is correct ( ) a. the speed of the object may not change b. the speed of the object cannot be uniformly changed c. the speed direction of point a points from a to b d. the displacement of the ab segment must be less than the distance

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.