## krypton Group Title wo charges, Q1 = 4.00 μC and Q2 = 6.80 μC, are located at points (0, -2.65 cm) and (0, +2.65 cm), as shown in the figure. What is the magnitude of the electric field at point P, located at (6.15 cm, 0), due to Q1 alone? one year ago one year ago

1. krypton Group Title

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2. krypton Group Title

@demitris could u help me with this one last question,and thanks for the others u did.got it right

3. krypton Group Title

What is the x-component of the total electric field at P? What is the y-component of the total electric field at P? What is the magnitude of the total electric field at P?

4. imron07 Group Title

5. krypton Group Title

NOT YET :(

6. krypton Group Title

GOT ONLY NUMBER 1

7. imron07 Group Title

|dw:1349477252753:dw| E1 is electric field due to q1. $E_1=\frac{1}{4\pi\epsilon_0 }\frac{q_1}{r^2}$ making angle $\theta=\arctan{\frac{y}{x}}$with horizontal.

8. imron07 Group Title

Okay, now here's the strategy: 1) Find the magnitude of E1 first (you already did it in no 1) 2) Find the magnitude of E2 (no useto do this, since both q1 and q2 has the same charge) 3) Find x component of E1 and E2 (actually you just need to find x component of E1. E2 has the same x component). 4) Find y component of E1 and E2 (the total y component of E1 and E2 cancels each other. Since they have same magnitude but opposite direction)

9. Algebraic! Group Title

@imron07 not quite right. q1 and q2 are different.

10. imron07 Group Title

Haha, thanks @Algebraic! . I thought they have common charge.

11. 03225186213 Group Title

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12. 03225186213 Group Title

r^2=(X2-X1)^2-(Y2-Y1)^2 distance formula