A simple U-tube that is open at both ends is partially filled with a liquid of density 436 kg/m. Water is then poured into one arm of the tube, forming a column 13 cm in height, as shown in the diagram. hi 13 cm T light liquid 436 kg/m heavy liquid 1000 kg/m What is the difference in the heights of the two liquid surfaces? The density of heavy liquid is 1000 kg/m. Answer in units of cm. What is the difference in the heights of the two liquid surfaces? Answer in units of cm.