Physics

Physics, 01.09.2019 04:00, ernest214

There is a naturally occurring electric field near the surface of the earth whose magnitude is 80√pi v/m. how much energy is stored per cubic meter in this field?

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Physics, 22.06.2019 12:20, zenaidazurita1p6bs1d

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

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Physics, 14.09.2019 02:10, xelynncaldera

Measurements indicate that there is an electric field surrounding the earth. its magnitude is about 150 n/c at the earth's surface and points inward toward the earth's center. what is the magnitude of the electric charge on the earth? express your answer using two significant figures.

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Physics, 19.09.2019 01:10, smarcalli6457

The magnitude e of an electric field depends on the radial distance r according to e = a/r4, where a is a constant with unit volt-cubic meter. as a multiple of a, what is the magnitude of the electric potential difference between r1 = 1.71 m and r2 = 2.89 m?

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Physics, 10.10.2019 04:20, kswaggish101

Consider a point charge q in three-dimensional space. symmetry requires the electric field to point directly away from the charge in all directions. to find e(r), the magnitude of the field at distance r from the charge, the logical gaussian surface is a sphere centered at the charge. the electric field is normal to this surface, so the dot product of the electric field and an infinitesimal surface element involves cos(0)=1. the flux integral is therefore reduced to ∫e(r)da=e(r)a(r), where e(r) is the magnitude of the electric field on the gaussian surface, and a(r) is the area of the surface.

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