An Isolated Air-Filled Parallel-Plate Capacitor That Is No Longer Connected

question 5

Short Answer

An isolated air-filled parallel-plate capacitor that is no longer connected to anything has been charged up to Q = 2.9 nC.The separation between the plates initially is 1.20 mm,and for this separation the capacitance is 31 pF.Calculate the work that must be done to pull the plates apart until their separation becomes 5.30 mm,if the charge on the plates remains constant.
(ε₀ = 8.85 × 10^-12 C²/N • m²)

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Definitions:

Pure Monopoly

A market structure where a single seller controls the entire supply of a product or service, with no close substitutes, leading to significant market power.

Profit-Maximizing Price

The price at which a company can sell its product or service to achieve the highest possible profit.

ATC

Average Total Cost, which is calculated by dividing total costs by the quantity of output produced.

MC

Marginal Cost, the increase in total cost that arises from an extra unit of production.