Two point charges are placed on the x axis as shown in (Figure 1). The first charge, q1q1q_1 = 8.00 nCnC , is placed a distance 16.0 mm from the origin along the positive x axis; the second charge, q2q2q_2 = 6.00 nCnC , is placed a distance 9.00 mm from the origin along the negative x axis.   Figure 1 of 2Two charges, labeled q 1 and q 2, are shown on the xy-plane. Point O is at the origin. Charge q 1, which is equal to 8 nanocoulombs, lies on the positive x-axis at distance 16 meters from the origin. Charge q 2, which is equal to 6 nanocoulombs, lies on the negative x-axis at distance 9 meters from the origin.   1.Find the x-component of the electric field at the origin, point O. Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.   2. Now, assume that charge q2q2 is negative; q2=−6nCq2=−6nC, as shown in (Figure 2). What is the x-component of the net electric field at the origin, point O? Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.

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Chapter1: Units, Trigonometry. And Vectors
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Two point charges are placed on the x axis as shown in (Figure 1). The first charge, q1q1q_1 = 8.00 nCnC , is placed a distance 16.0 mm from the origin along the positive x axis; the second charge, q2q2q_2 = 6.00 nCnC , is placed a distance 9.00 mm from the origin along the negative x axis.
 
Figure
1 of 2Two charges, labeled q 1 and q 2, are shown on the xy-plane. Point O is at the origin. Charge q 1, which is equal to 8 nanocoulombs, lies on the positive x-axis at distance 16 meters from the origin. Charge q 2, which is equal to 6 nanocoulombs, lies on the negative x-axis at distance 9 meters from the origin.
 
1.Find the x-component of the electric field at the origin, point O.
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
 
2.
Now, assume that charge q2q2 is negative; q2=−6nCq2=−6nC, as shown in (Figure 2). What is the x-component of the net electric field at the origin, point O?
Express your answer in newtons per coulomb to three significant figures, keeping in mind that an x component that points to the right is positive.
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