Mercury is poured into a U-tube as shown in Figure a. The left arm of the tube has cross-sectional area A of 10.5 cm, and the right arm has a cross-sectional area A of 5.30 cm. One hundred grams of water are then poured into the right arm as shown in Figure b. Water U U Mercury a b (a) Determine the length of the water column in the right arm of the U-tube. cm (b) Given that the density of mercury is 13.6 g/cm, what distance h does the mercury rise in the left arm? cm