When Three Vectors, , , and Are

question 23

Multiple Choice

When three vectors, , , and are placed head to tail, the vector sum . If the vectors all have the same magnitude, the angle between the directions of any two adjacent vectors is

• A) 30°
• B) 60°
• C) 90°
• D) 120°
• E) 150°

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Definitions:

Brood Parasitism

One egg-laying species benefits by having another raise its offspring.

Competitive Exclusion

A principle stating that two species competing for the same limiting resources cannot coexist at constant population values, if other ecological factors remain constant.

Woodpeckers

A family of birds known for their strong beaks and ability to peck at wood to find insects, create nesting sites, or communicate.

Brood Parasites

Organisms that rely on others to raise their young, often laying their eggs in the nests of unrelated species, which then unknowingly rear the parasitic offspring.