Question

the distance from the earth to the sun equals 1 au. neptune is 30 au from the sun. how far is neptune from the earth?au

Explanation:

Step1: Analyze the positions

Assume Earth and Neptune are in a straight line with the Sun. If Earth is between Sun and Neptune, the distance from Neptune to Earth is the difference of their distances from the Sun.

Step2: Calculate the distance

The distance from Earth to Sun is \(d_{ES}=1\) AU, and the distance from Neptune to Sun is \(d_{NS} = 30\) AU. Then the distance from Neptune to Earth \(d_{NE}=d_{NS}-d_{ES}\).
Substitute the values: \(d_{NE}=30 - 1\).

Answer:

\(29\) AU