As Shown in the Figure, Three Charges Are at the Vertices

question 78

Multiple Choice

As shown in the figure, three charges are at the vertices of an equilateral triangle. The charge $Q$ is $6.7 \mathrm { nC }$ , and all the other quantities are accurate to two significant figures. What is the magnitude of the net electric force on the charge $Q$ due to the other two charges? $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = 9.0 \times 10 ^ { 9 } \mathrm {~N} \right.$ . $m ^ { 2 } / C ^ { 2 }$ )

• A) \(1.4 \times 10 ^ { - 3 } \mathrm {~N}\)
• B) \(1.0 \times 10 ^ { - 3 } \mathrm {~N}\)
• C) \(2.1 \times 10 ^ { - 3 } \mathrm {~N}\)
• D) \(1.2 \times 10 ^ { - 3 } \mathrm {~N}\)

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Definitions:

Long-Run Time Period

A duration in economics where all factors of production and costs are variable, allowing for complete adjustment.

Economies Of Scale

The economical benefits that businesses gain from their operation size, typically resulting in lower costs per unit of output as the scale expands.

Specialization

The process of focusing efforts and resources on a limited number of activities to increase efficiency and productivity.

Fixed Input

A resource in the production process whose quantity cannot easily be changed in the short term, such as buildings and machinery.