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Urgent answer needed!! (I've exams tomorrow)

Do you understand vector notation?

it shows the direction of vector quantity...

What about the magnitude?

\[E=k \frac{ Q }{ r ^{2} }\]
Calculate the magnitude of the electric field at point B

|dw:1348614053138:dw|

any questions about that?

@Algebraic! PLEASE MAKE IT MORE CLEARER

what part?

finding magnitudes of E?

E1: (9E9*7E-6)/.005m
etc

PLS HOW DID THE ANGLE BECOME 45 DEGREES

well...

|dw:1348615004630:dw|

that's better

does that clear it up?

yep it does

so you got E2 (mag. and direction/components) ?

i really learnt alot from you @Algebraic!

haha! good! I hope so!