A student used a potometer to measure the movement of water through the shoot of a plant. As water is lost from the shoot, it is replaced by water from the capillary tube.
In one experiment, the air bubble moved 10.5 mm10.5\text{ mm}10.5 mm in 15 minutes15\text{ minutes}15 minutes. The diameter of the capillary tube was 1.2 mm1.2\text{ mm}1.2 mm.
Calculate the rate of water uptake by the shoot in this experiment.
Give your answer in mm3 hour−1\text{mm}^3\text{ hour}^{-1}mm3 hour−1. Show your working. (The area of a circle is found using the formula, area=πr2\text{area} = \pi r^2area=πr2)
