a. The barometer is a device to measure atmospheric pressure. If you plan to make a barometer by using a special liquid that has density C kg/m, what will be expected device height? Take atmospheric pressure 1.01x10N/m (25points) b. If your volume is B liters, what is the buoyant force acting on you if you are inside the water. Take density of water as 1000 kg/m. (25 points) c. A container has a vertical tube, connected to it at its side, as shown in the figure. A liquid of density C+500 kg/mreaches level X in the container and level Y in the tube. Level X being 8.0 cm higher than level Y. The tube has unknown oil to a D cm high, between levels Y and Z, Calculate the density of the unknown liquid. (25 points) Z X Y