Neptune Was Discovered Due to Irregularities in Uranus' Orbit

question 25

Essay

Neptune was discovered due to irregularities in Uranus' orbit.At closest approach,these two planets are about 10 AU 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 20 AU from the Sun)?

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Definitions:

Observation

The act of monitoring or noting phenomena as they occur in a scientific or clinical context to gather data or make assessments.

Systolic Blood Pressure

The pressure in the arteries when the heart beats, noted as the higher number in a blood pressure reading.

Weekly Weight

A measure of a person's body weight recorded on a weekly basis to monitor changes over time.