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The equipotential surfaces for two point charges are shown in the figure, with the value of potential marked on the line for each surface.
(a) What is the potential difference, VG - VD, between points G and D?
(b) What is the potential difference, VA - VG, between points A and G?
Equilibrium
A state of balance or stability within a system, where competing forces or influences are in equal opposition.
Nonprobability Sample
There is little or no attempt to get a representative cross-section of a population.
Availability Of Participants
The extent to which potential research subjects or participants are accessible or willing to take part in a study.
Nonprobability Sample
A sampling method where not all members of the population have a chance of being selected, often leading to potential biases.
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