A point charge (m = 1.0 g) at the end of an insulating cord of length 55 cm is observed to be in equilibrium in a uniform horizontal electric field of 15, 000 N/C, when the pendulum's position is as shown in the figure(Figure 1), with the charge 12 cm above the lowest (vertical) position. Constants | Periodic Table Part A If the field points to the right in the figure, determine the magnitude of the point charge. Express your answer using two significant figures. ΑΣΦ ? Figure 1 of 1 Q = C Submit Request Answer l = 55 cm Part B If the field points to the right in the figure, determine the sign of the point charge. m 12 cm O positive O negative

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.