electric field equations

calculator. Most known phsyics. One question: For point charge 6.9 µC and point charge -3.8 µC located at the same positions as in the previous question (5 m and 4 m, respectively), determine the magnitude of the net electric field E at the origin (in N/C).

Your answer should be a number with two decimal places, do not include the unit.

2nd question: A test charge of +1µC is placed halfway between a charge of +4.9µC and another of +8.2 µC separated by 10 cm. What is the magnitude of the force (in Newtons) on the test charge?

Your answer should be a number with two decimal places, do not include the unit.

3rd: Point charges of 10.1 nC and 46.2 nC are placed 0.500 m apart. What is the electric field halfway between them? Indicate direction by a positive or a negative value. Keep in mind that a positive vector is one directed to the right and a negative vector is one directed to the left.

Your answer should be a positive or a negative number with two decimal places, do not include the unit.

Hint: 1 nC = 10-9 C

and so on

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