Two small plastic spheres are given positive electrical charges. when they are a distance of 14.8cm apart, the repulsive force between them has a magnitude of 0.235 n.
what is the charge on each sphere if the two charges are equal?
what is the charge on first sphere if it has four times the charge of the other?
what is the charge on the second sphere?
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Ответ:
Explanation:
Case I: They have same charge.
Charge on each sphere = q
Distance between them, d = 14.8 cm = 0.148 m
Repulsive force, F = 0.235 N
Use Coulomb's law in electrostatics
By substituting the values
Thus, the charge on each sphere is .
Case II:
Charge on first sphere = 4q
Charge on second sphere = q
distance between them, d = 0.148 m
Force between them, F = 0.235 N
Use Coulomb's law in electrostatics
By substituting the values
Thus, the charge on second sphere is and the charge on first sphere is .
Ответ:
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