A Spherical Shell Has Inner Radius R₁, Outer Radius R₂

question 21

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:

Incentive Theory

A theory in psychology that suggests behavior is motivated by a desire for rewards or incentives.

Protection Motivation Theory

A theory that explains how people are motivated to protect themselves from perceived threats by evaluating the severity, their vulnerability, and the efficacy of preventive measures.

Daily Travel

Refers to the routine trips individuals make on a regular basis, such as commuting to work or school and errands.

Practical Choice

A decision made based on efficiency, effectiveness, and pragmatism rather than emotional or aesthetic considerations.