∙∙Two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be pr

step 1 In order to solve this problem, we're first going to figure out what the charge must be by using

∙∙Two small spheres spaced 20.0 cm apart have equal charge....

$\bullet$$\bullet$ Two small spheres spaced 20.0 $\mathrm{cm}$ apart have equal
charge. How many excess electrons must be present on each
sphere if the magnitude of the force of repulsion between
them is $4.57 \times 10^{-21} \mathrm{N}^{2}$

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Key Concepts

Coulomb's Law

Coulomb's Law describes the force between two point charges, stating that the magnitude of the electrostatic force between them is directly proportional to the product of their charges and inversely proportional to the square of the distance separating them. This principle is fundamental in calculating forces in electrostatics and helps determine the amount of charge present when the force and distance are known.

Quantization of Electric Charge

Electric charge is quantized, meaning it exists in discrete amounts rather than as a continuous range; the smallest unit of charge is the elementary charge. This concept implies that any observable charge is an integer multiple of the charge of a single electron, making it essential for understanding how microscopic charges accumulate on objects.

Elementary Charge

The elementary charge is the magnitude of the electric charge carried by a single electron. It serves as the basic building block for understanding charge quantization and is a critical constant when converting between the total charge on an object and the number of electrons responsible for that charge.

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