Two Point Charges of +1

question 26

Multiple Choice

Two point charges of +1.0 μC and -2.0 μC are located 0.50 m apart.What is the minimum amount of work needed to move the charges apart to double the distance between them? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

• A)-36 mJ
• B)+18 mJ
• C)0 mJ
• D)+36 mJ
• E)-18 mJ

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Definitions:

Cellulose

A complex carbohydrate that forms the primary structural component of plant cell walls and is indigestible to humans.

Xylem

The plant's vascular system responsible for transporting water and dissolved nutrients from the roots throughout the rest of the plant.

Liverworts

Non-vascular plants belonging to the division Marchantiophyta, among the earliest land plants.

Dominant Sporophyte

A phase in the life cycle of plants and algae that is diploid and typically the most conspicuous and long-lived phase.