A Physics Student Adds Two Displacement Vectors with Magnitudes of 8.0

question 19

Multiple Choice

A physics student adds two displacement vectors with magnitudes of 8.0 km and 6.0 km. Which one of the following statements is true concerning the magnitude of the resultant displacement?

• A)It must be 10.0 km.
• B)It must be 14.0 km.
• C)It could be equal to zero kilometers, depending on how the vectors are oriented.
• D)No conclusion can be reached without knowing the directions of the vectors.
• E)It could have any value between 2.0 km and 14.0 km depending on how the vectors are oriented.

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Definitions:

Geographic Variation

Genetic differences that may exist among different populations within the same species. See cline for an example of one type of geographic variation

Sickle Cell Anemia

A genetic blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape, leading to various complications.

Homozygous Dominant

A genetic condition where an individual has two dominant alleles of a particular gene, resulting in the expression of the dominant trait.

Homozygous Recessive

A genetic condition where an individual has two copies of a recessive allele for a particular trait.