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Question: Often times during volcano eruptions the clouds have large static charge buildups that cause lightning to happen. If a rock is ejected by the volcano and it flies to a height of 1800 m, and the clouds have a charge concentration of +40.0 C at a height of 3900 m and ?40.0 C at a height of 1000 m.
Part A: What is the electric field at the ejected rock?
Please show complete calculation to determine the electric field at the ejected rock.
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