Investigators are exploring ways to treat milk for longer shelf life by using pulsed electric fields to destroy bacterial contamination. one system uses 8.0cm diameter circular plates separated by 0.95cm. the space between the plates is filled with milk, which has the same dielectric constant as that of water. the plates are briefly charged to 30,000v. what is the capacitance of the system? how much charge is on each plate when they are fully charged?