Venting port 36 E As a safety engineer, you must evaluate the practice of storing flammable conducting liq- uids in nonconducting containers. The company supplying a certain liquid has been using a squat, cylin- drical plastic container of radius r = 0.20 m and filling it to height h = 10 cm, which is not the con- tainer's full interior height (Fig. 25-44). Your investigation reveals that during handling at the company, the exterior surface of the container commonly acquires a negative charge density of magni- tude 2.0 µC/m? (approximately uniform). Because the liquid is a conducting material, the charge on the container induces charge separation within the liquid. (a) How much negative charge is induced in the center of the liquid's bulk? (b) Assume the capaci- tance of the central portion of the liquid relative to ground is 35 pF. What is the potential energy associated with the negative charge in that effective capacitor? (c) If a spark occurs between the ground and the central portion of the liquid (through the vent- ing port), the potential energy can be fed into the spark. The mini- mum spark energy needed to ignite the liquid is 10 mJ. In this situation, can a spark ignite the liquid? Figure 25-44 Problem 36.

Venting port 36 E As a safety engineer, you must evaluate the practice of storing flammable conducting liq- uids in nonconducting containers. The company supplying a certain liquid has been using a squat, cylin- drical plastic container of radius r = 0.20 m and filling it to height h = 10 cm, which is not the con- tainer's full interior height (Fig. 25-44). Your investigation reveals that during handling at the company, the exterior surface of the container commonly acquires a negative charge density of magni- tude 2.0 µC/m? (approximately uniform). Because the liquid is a conducting material, the charge on the container induces charge separation within the liquid. (a) How much negative charge is induced in the center of the liquid's bulk? (b) Assume the capaci- tance of the central portion of the liquid relative to ground is 35 pF. What is the potential energy associated with the negative charge in that effective capacitor? (c) If a spark occurs between the ground and the central portion of the liquid (through the vent- ing port), the potential energy can be fed into the spark. The mini- mum spark energy needed to ignite the liquid is 10 mJ. In this situation, can a spark ignite the liquid? Figure 25-44 Problem 36.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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