An Airplane Flies from Point a to Point B,a Distance

question 23

Multiple Choice

An airplane flies from point A to point B,a distance of 100 km,and back again with an airspeed of 250 km/h.What is the difference in the time for this round trip on a day when a wind of speed 50.0 km/h blows from A toward B and on a day when a wind of speed 50.0 km/h blows in a direction perpendicular to AB?

• A)zero
• B)1.0 min
• C)5.5 min
• D)4.5 min
• E)10 min

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Definitions:

Phenotype

The manifest features or qualities of an organism, developed through the interplay between its genetic code and environmental conditions.

Genotype

The genetic makeup of a single organism.

Chromosomes

Thread-like molecules that carry hereditary information organized in the form of genes.

Homozygous

Referring to an individual having two identical alleles for a specific trait.