Vector $\overrightarrow { \mathrm { A } }$ Has a Magnitude of 6

question 99

Multiple Choice

Vector $\overrightarrow { \mathrm { A } }$ has a magnitude of 6.0 m and points 30° east of south. Vector $\overrightarrow { \mathrm { B } }$ has a magnitude of 4.0 m and points 30° west of north. The resultant vector $\overrightarrow { \mathrm { A } }$ + $\overrightarrow { \mathrm { B } }$ is given by

• A)2.0 m at an angle of 30° north of west.
• B)2.0 m at an angle of 30° east of south.
• C)10.0 m at an angle of 60° north of west.
• D)10.0 m at an angle of 60° east of south.
• E)1.0 m at an angle of 60° north of west.

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Definitions:

Abundance

The great or plentiful amount of something in a particular environment, often used in ecology to describe the number of individuals of a particular species within a given area.

Organismic Model

Cooperative view of community, described by Clements, in which a community goes through certain stages of development (succession), like the embryonic stages of an organism, and eventually reaches an adult state (climax community).

Individualistic Model

Independent view of community, described by Gleason, in which biological interactions are less important in the production of communities than are environmental gradients (such as climate and soil) or even chance. Compare with organismic model.

Interdependent

A relationship in which two or more entities rely on each other for survival or for the completion of processes.