A point charge Q = -5 C and two unknown point charges, 91 and 92, are placed as shown in thefigure. Both the x and y components of the electric field at the origin O, due to charges Q, 91 and 92,are equal to zero. What is the charge 91 in unit of C?yO1.3 m922.0 m30°1.1 m2₂91Two point charges, Q₁ = -2.6μC and Q2 = +2.7 μC, are placed as shown in the figure. (k = 1/4лε =8.99 × 10⁹ Nm²/C²) What is the x component of the electric field, at the origin O in unit of Nm³¹ C1?1.9m1.2m ₁x

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A point charge Q = -5 C and two unknown point charges, 91 and 92, are placed as shown in the figure. Both the x and y components of the electric field at the origin O, due to charges Q, 91 and 92, are equal to zero. What is the charge 91 in unit of C? y 0 1.1 m 1.3 m 2.0 m 30° 192 91

A point charge Q = -5 C and two unknown point charges, 91 and 92, are placed as shown in the figure. Both the x and y components of the electric field at the origin O, due to charges Q, 91 and 92, are equal to zero. What is the charge 91 in unit of C? y 0 1.1 m 1.3 m 2.0 m 30° 192 91

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Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

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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.

Question

A point charge Q = -5 C and two unknown point charges, 91 and 92, are placed as shown in the
figure. Both the x and y components of the electric field at the origin O, due to charges Q, 91 and 92,
are equal to zero. What is the charge 91 in unit of C?
y
O
1.3 m
92
2.0 m
30°
1.1 m
2₂
91
Two point charges, Q₁ = -2.6μC and Q2 = +2.7 μC, are placed as shown in the figure. (k = 1/4лε =
8.99 × 10⁹ Nm²/C²) What is the x component of the electric field, at the origin O in unit of Nm³¹ C
1?
1.9m
1.2m ₁
x

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