A Very Small Round Ball Is Located near a Large

question 29

Multiple Choice

A very small round ball is located near a large solid sphere of uniform density.The force that the large sphere exerts on the ball

• A) is exactly the same as it would be if all the mass of the sphere were concentrated at the center of the sphere.
• B) is approximately the same as it would be if all the mass of the sphere were concentrated at the center of the sphere.
• C) is independent of the mass of the ball.
• D) is independent of the mass of the sphere.
• E) can only be calculated using calculus.

---

Definitions:

Groundwater Velocity

The speed at which groundwater moves through an aquifer, influenced by the permeability of the rock and the hydraulic gradient.

Water Table

The upper surface of the zone of saturation where water pressure and atmospheric pressure are equal, beneath which soil and rock are saturated with water.

Groundwater Flow

The movement of water through the subsurface soil and rocks, primarily due to gravity and pressure differences.

Subsurface Material

Material located beneath Earth's surface, including soil, rock, and underground water resources, which are accessible through drilling or excavation.