A $7.0 - \mu \mathrm { C }$ Point Charge and A

question 10

Multiple Choice

A $7.0 - \mu \mathrm { C }$ point charge and a $9.0 - \mu \mathrm { C }$ point charge are initially extremely far apart. How much work does it take to bring the $7.0 - \mu C$ point charge to the point $x = 3.0 \mathrm {~mm} , y = 0.0 \mathrm {~mm}$ , and the $9.0 - \mu \mathrm { C }$ point charge to the point $x = - 3.0 \mathrm {~mm} , y = 0.0 \mathrm {~mm} ? \left( k = 1 / 4 \pi \varepsilon _ { 0 } = 9.0 \times 10 ^ { 9 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 } \right)$

• A) \(16 \mathrm {~J}\)
• B) \(95 \mathrm {~J}\)
• C) \(63 \mathrm {~J}\)
• D) \(190 \mathrm {~J}\)

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Definitions:

Unit-Level Activities

Activities that are performed each time a unit is produced.

Activity-Based Costing

A costing method that identifies activities in an organization and assigns the cost of each activity to all products and services according to the actual consumption by each.

Internal Decision-Making

The process within an organization to choose among alternatives and make choices that impact its internal operations and strategy.

Duration Driver

A measure of the amount of time required to perform an activity.