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

question 18

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:

Protein Synthesis

The biological process by which cells build protein molecules based on genetic codes in the DNA and RNA.

Telomeres

Telomeres are the protective caps at the ends of chromosomes, which prevent the loss of genetic information during cell division and play a key role in cellular aging and cancer.

Transposons

DNA sequences that can change positions within the genome.