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How does the body force (electric force) in PDE be expressed?

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Hello everyone, can you help me solve the following problems, I want to know how to formulate ▽u in PDE? Where F is the electric field force, F=Eq, Fx=Exqx, Fy=Ey*qy. E=-▽u


1 Reply Last Post 14 mars 2018, 07:00 UTC−4

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Posted: 7 years ago 14 mars 2018, 07:00 UTC−4

Who can help me solve this problem?

Who can help me solve this problem?

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