What is the magnitude E of the electric field midway between the spheres? Take the permittivity of free space to be ϵ0 8.85×10−12 C^2/(N⋅m2) What is the direction of the electric field midway between the spheres? toward the positively charged sphere toward the negatively charged sphere upward perpendicular to the line connecting the centers of the spheres downward perpendicular to the line connecting the centers of the spheres

What is the magnitude E of the electric field midway between the spheres? Take the permittivity of free space to be ϵ0 8.85×10−12 C^2/(N⋅m2) What is the direction of the electric field midway between the spheres? toward the positively charged sphere toward the negatively charged sphere upward perpendicular to the line connecting the centers of the spheres downward perpendicular to the line connecting the centers of the spheres

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The cockroach Periplaneta americana can detect a static electric field of magnitude 6.00 kN/C using their long antennae. If the excess static charge on a cockroach is modeled as point charges located at the end of each antenna, what magnitude of charge q would each antenna possess in order for each antennae to experience a force of magnitude 5.50 µN from the external electric field? Calculate q in units of nanocoulombs (nC). q= nC
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