A probe moves from a distance r to a distance 3r from the center of an asteroid. How does the gravitational field strength change?

A test charge moves from 8.0 m to 4.0 m from the center of a charged metal sphere. What happens to the electric field strength?

A satellite is moved to a distance 5 times farther from Earth's center. Compared with its original value, the gravitational force on it is now what?

A tiny test charge is moved so its distance from a point charge's center is 10 times larger. What is the new electric force compared with the old force?

A probe moves from 6.0 m to 2.0 m from the center of a small planet. How does the gravitational field strength change?

A test charge moves from 2.0 m to 3.0 m from the center of a point charge. What fraction of the original electric field strength remains?

A spacecraft moves to half its original distance from the center of an asteroid. What happens to the gravitational force from the asteroid?

A sensor is moved so its distance from a point charge's center is multiplied by a factor of 4. What happens to the electric field strength?

At $6.0\times 10^6$ m from a planet's center, g = 8.0 N/kg. What is g at $1.2\times 10^7$ m from the center?

An electric field is 180 N/C at 4.0 m from the center of a point charge. What is the field at 12.0 m?

Two small charged spheres exert a force of 3.6 N at a center-to-center distance of 0.20 m. What is the force at 0.60 m?

A planet's gravitational field is 0.80 N/kg at $3.0\times 10^7$ m from its center. What is it at $1.5\times 10^7$ m?

A point charge produces an electric field of 720 N/C at 0.050 m from its center. What is the field at 0.10 m?

Two point masses attract with 45 N at a center-to-center distance of 2.0 m. What is the gravitational force at 5.0 m?

A small moon's gravitational field is 64 N/kg at 1.0 m from its center in a model. What is the field at 8.0 m?

Use the graph of electric field strength versus distance from a point charge. What is the field at 3.0 m from the charge's center?

The graph shows gravitational field strength versus distance from a point mass. What value is shown at 4.0 m?

Use the graph of field strength versus distance. Which relationship best matches the curve shown?

The graph shows electric field strength around an isolated point charge. What field strength is shown at 6.0 m?

From the graph, which comparison between 1.0 m and 2.0 m from the source is correct?

The field-line diagram shows a single point charge. Which point is in the stronger electric field?

The diagram shows gravitational field lines around a planet. Which point has the greater gravitational field strength?

In the field-line diagram for one point charge, points R and S are the same distance from the source. How do their field magnitudes compare?

The field-line diagram marks two points near one charged source. Which statement about the field strength is supported by the spacing?

A test mass is placed at two labeled points in the planet's field-line diagram. Where would it experience the larger force per kilogram?

Which quantity follows an inverse-square relationship with distance from a point source?

Which quantity does NOT follow an inverse-square relationship with distance from the source?

Which pair both use the same inverse-square distance dependence?

When applying the inverse square law to a spherical planet treated as a point source, which distance should be used?

A student says, 'Any field is inverse-square.' Which example best shows why that claim is too broad?