Calculate the altitude above the surface of Earth, in meters, at which the acceleration due to gravity is g

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The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.