9.18. Calculate the e´-potential from the following data: the potential of the flow U leak amounted to 45 * 10–3 V; Xv = 1.5 * 10–2 Ohm – 1 * m – 1; e is 1; n = 1 * 10-3 Pa * s; a = 1.8; P = 4 * 10 ^ 4 Pa.
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