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4. Figure 1 shows line diagram of a filling of tank. Determine the voltage drop between the nozzle and grounded tank, and the energy stored in the nozzle [4\%]. Determine the hose diameter required to avoid the potential hazard due to static charge? [6%] [You may consider tlanges are 2 inch in diameter and having a gap of 0.25 inch] Figure 1. Line diagram of tank filling operation