Question

The mass of the sun is 2 x 10 (30) kg, and the distance between Neptune and sun is 30 AU. What is the orbital period of Neptune in earth years

Answer 1

We may use the mathematical expression of Kepler's law here, which is:
T² = 4π²a³/GM
Where T is in earth years, a is astronomical units and M is solar masses. Moreover,
4π²/GM = 1, so:
T² = a³

T = √(a³)
T  = √(30³)
T = 164.3

Neptune's time period of orbit is 164.3 earth years.

Answer 2

The orbital period of Neptune is equal to 164.3 earth years.

What is Orbital period?

This is defined as the amount of time an astronomical object takes to complete one orbit around another.

Kepler's law = T² = 4π²a³/GM

Where T is in earth years, a is astronomical units and M is solar masses.

Since 4π²/GM = 1

T² = a³

T = √(a³)

T  = √(30³)

T = 164.3 earth years.

Read more about Orbital period here https://brainly.com/question/1389940

#SPJ5