Neptune Was Discovered Due to Irregularities in Uranus's Orbit

question 22

Essay

Neptune was discovered due to irregularities in Uranus's orbit. At closest approach, these twoplanets are about 10 A.U. apart.a)What is the force of gravity between these two objects?b)How does that compare to the force of gravity between the Sun and Uranus (approximately 20A.U. from the Sun)?

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Definitions:

Genetic Component

The portion of variation in a trait within a population that is attributable to genetic differences among individuals.

Concordance Rates

The statistical measure used in genetics to indicate the likelihood that both individuals in a pair (typically twins) will exhibit the same trait or disorder.

Identical Twins

Twins who develop from a single fertilized egg that splits into two, sharing 100% of their DNA.

Fraternal Twins

Fraternal twins are siblings born at the same time as a result of two different eggs fertilized by two different sperm, sharing about 50% of their genes.