A Spherical Shell Has Inner Radius R₁, Outer Radius R₂

question 31

Multiple Choice

A spherical shell has inner radius R₁, outer radius R₂, and mass M, distributed uniformly throughout the shell.The magnitude of the gravitational force exerted on the shell by a point mass m a distance d from the center, inside the inner radius, is:

• A)0
• C)GMm/d²
• E)GMm/(R₁ - d)²

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Definitions:

Compromise

A settlement of differences by mutual concessions or modification of demands.

Future Favors

A practice commonly seen in developing countries based upon mutual obligation and resulting in the exchange of favors over years and even generations; also used in some industrialized countries such as Japan and South Korea.

Inner Circle

A clique of trusted family members, tribal members, or friends (depending on the culture) who are at the center of power or influence.

Ethical Standards

Principles that govern the behavior of individuals and organizations, determining what is right and wrong.