試題詳解

42. A siphon tube is used to transport liquid from a higher location to a lower location without electric pumps. The tube sinks into the liquid by a length d. The highest point of the tube, point B is at a distance h from the surface of the liquid. The outlet of the tube, point C is at a distance d + I from the surface of the liquid. The density of the liquid is ρ. The atmosphere pressure is P₀. The gravitational field is g. What is the velocity of the liquid coming out at point C?
(A)
(B)
(C)
(D)
(E)