2. A D flip flop can be made to operate in a toggle mode (divide its CLOCK input frequency by two) by adding an external Inverter gate and making the appropriate connections. Draw the schematic for this circuit.

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?