A Series of 3 Uncharged Concentric Shells Surround a Small

question 5

Multiple Choice

A series of 3 uncharged concentric shells surround a small central charge q. The charge distributed on the outside of the third shell is

• A) −3q.
• B) −(ln 3)q.
• C) +q.
• D) +(ln 3)q.
• E) +3q.

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Definitions:

Pyramid of Biomass

A graphical representation showing the total mass of organisms at each trophic level in an ecosystem.

Nitrogen Fixation

The biological conversion of atmospheric nitrogen into a form (such as ammonia) usable by plants.

Nitrate

A polyatomic ion with the chemical formula NO3- or a compound containing this ion, commonly found in fertilizers, explosives, and natural water sources.

Ecosystem Management

A conservation focus that emphasizes restoring and maintaining ecosystem quality rather than the conservation of individual species.