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Campo eletrico resultante E no ponto medio entre duas esferas
Tenho uma questao que nao estou conseguindo resolver: Duas esferas identicas eletrizadas, uma positivamente e outra negativamente, com carga 3,6 mc cada uma, estao separadas por uma distancia de 60 cm, no vacuo, onde o valor da constante eletrostatica vale ko=9.10^9 N.m^2/C^2.
a) a força eletrica F entre elas é de atraçao ou de repulsao? E qual a sua intensidade? (ja resolvi)
b) Determina o valor do campo eletrico resultante E no ponto medio entre as esferas.
Alguem me ajuda a fazer a letra b por favor :/ …
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