---
title: "An astronomer identifies a new exoplanet and determines that its mass is exactly twice the mass of Earth and its radius is exactly twice the radius of Earth. Earth has a surface gravitational field strength of magnitude \\(g\\). Which of the following is the best estimate for the magnitude of the gravitational field strength on the surface of the exoplanet?"
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url: "https://nerd-notes.com/ubq/114592/"
date_modified: "2026-07-03T04:46:09+00:00"
---

# An astronomer identifies a new exoplanet and determines that its mass is exactly twice the mass of Earth and its radius is exactly twice the radius of Earth. Earth has a surface gravitational field strength of magnitude \(g\). Which of the following is the best estimate for the magnitude of the gravitational field strength on the surface of the exoplanet?

An astronomer identifies a new exoplanet and determines that its mass is exactly twice the mass of Earth and its radius is exactly twice the radius of Earth. Earth has a surface gravitational field strength of magnitude \(g\). Which of the following is the best estimate for the magnitude of the gravitational field strength on the surface of the exoplanet?

- **A.** \(\dfrac{1}{4}g\)
- **B.** \(\dfrac{1}{2}g\)
- **C.** \(g\)
- **D.** \(2g\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/114592/*