How Much Energy Is Necessary to Place Three $+ 2.0 - \mu \mathrm { C }$

question 99

Multiple Choice

How much energy is necessary to place three $+ 2.0 - \mu \mathrm { C }$ point charges at the vertices of an equilateral triangle of side $2.0 \mathrm {~cm}$ if they started out extremely far away? $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = 9.0 \times 10 ^ { 9 } \mathrm {~N} \right.$ $\cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 }$ )

• A) \(6.7 \mathrm {~J}\)
• B) \(5.4 \mathrm {~J}\)
• C) \(4.5 \mathrm {~J}\)
• D) \(7.6 \mathrm {~J}\)

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Definitions:

Stimulus Generalization

The tendency for the conditioned response to be evoked by stimuli that are similar to the stimulus to which the response was conditioned.

Stimulus Discrimination

The ability to differentiate between similar stimuli and respond appropriately to each.

Secondary Reinforcer

A stimulus that has acquired reinforcing properties through association with a primary reinforcer, such as money becoming valuable through its ability to purchase food or other basic needs.

Salient

Refers to something that stands out prominently or is most noticeable or important.