3 positive charges
Three equal positive charges Q are located at the vertices of an isosceles right triangle ABC. The right angle is at vertex A. The length of side AB is 1m. What is the electric field strength at the center S of side BC, i.e., what force would act on a positive charge q of magnitude 1C?
Correct answer:

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You need to know the following knowledge to solve this word math problem:
- geometry
- vector
- arithmetic
- square root
- addition
- planimetrics
- Pythagorean theorem
- right triangle
- area of a shape
- triangle
- numbers
- fractions
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