Three charges are positioned as indicated in the figure.What are the horizontal and vertical components of the net force exerted on the +15 µC charge by the +11 µC and +13 µC charges? 
Definitions:
AVC
Average Variable Cost is the total variable costs divided by the quantity of output produced; it represents the variable cost per unit of output.
Optimal Plant Size
The scale of production at which a firm can produce goods at the lowest average cost, maximizing efficiency.
Fixed Factors
Resources in production that cannot be easily increased or decreased in the short term, such as land or certain machinery.
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