Point charges +4.00 μC and +2.00 μC are placed at the opposite corners of a rectangle as shown in the figure. What is the potential at point A, relative to infinity, due to these charges? (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2) 
Definitions:
Young Adulthood
A stage of human development that typically covers the period from the late teens through the twenties, during which individuals navigate the transition from adolescence to adulthood.
Old Age
a late stage in the human life cycle characterized by the decline in physical and sometimes cognitive function.
Longitudinal Studies
Research methods that involve repeated observations of the same variables over short or long periods of time to detect changes and development patterns.
Cross-Sectional Studies
Research designs that collect data from different individuals at one point in time to examine population characteristics or the prevalence of certain phenomena.
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