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Calculate the capacitance of the capacitor whose plates are defined by the surfaces Φ = 35° and Φ = 55°, each with span and height of 6 cm and 11 cm, respectively. The surfaces Φ = 35° and Φ = 55° are at potentials -3 V and 4 V, respectively. The dielectric has used has a relative permittivity of 2.3.

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