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# Three point charges are aligned along the x - axis as shown in Figure P15.57. Find the electric field at the position x 5 12.0 m, y 5 0.

## The direction of electric field $\mathrm{E}_{\mathrm{a}}$ is opposite to the other two.

### Discussion

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##### Christina K.

Rutgers, The State University of New Jersey

##### Andy C.

University of Michigan - Ann Arbor

##### Aspen F.

University of Sheffield

### Video Transcript

the electric field for a human position. Is there some off electric field due to one noogies minus one plus Ah, you two plus t three and substituting values here we have. Ah, minus que que one divided by our one square plus kei kun too divided by our two square plus thank you three derided by our three square. So we'll substitute those values here substituting values. If we just take kay out, which is a nine times 10 to the power nine just take a out. Then I put the value for a cube which is ah which we have Here is a four time stenting power minus nine divided by our which is 2.5 square. Ah, one is 2.5 square minus here five times 10 to the ballroom minus nine divided by two square minus. We have, um three times 10 to the power minus nine, divided by 1.2 square. So simplifying this weekend we get the elected feel off 24 new Compper Cool

Wesleyan University
##### Christina K.

Rutgers, The State University of New Jersey

##### Andy C.

University of Michigan - Ann Arbor

##### Aspen F.

University of Sheffield