Physics, 18.02.2020 05:35, emilylittle2442

What is the magnitude of the line charge density on the power line? Express your answer using two significant figures.

Answers: 2

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Answers

answered: fluffyskunk302

λ = -47 nC / m

Explanation:

The missing question is as follows:

" The potential difference between the surface of a 2.2 cm -diameter power line and a point 1.9 m distant is 3.8 kV. What is the magnitude of the line charge density on the power line? Express your answer using two significant figures. "

Given:

- The Diameter of the power line D = 2.2 cm

- The distance between two ends of power line L = 1.9m

- The potential difference across two ends V = 3.8 KV

Find:

What is the magnitude of the line charge density on the power line?

Solution:

- The derivation of the line of charges for a length L oriented along any axis centered at origin and the potential difference between two ends is as follows:

V = 2*k*λ*Ln( D / L )

Where,

k : Coulomb's Constant = 8.99*10^9

λ : The line charge density

- Re-arrange and solve for λ:

λ = V / 2*k*Ln( D / L )

Plug in the values:

λ = 3800 / 2*8.99*10^9*Ln( 2.2 / 190 )

λ = -4.74022*10^-8 C / m

λ = -47 nC / m

answered: Guest

An atom (ours, not carroll's) consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6 nm. * if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

answered: Guest

a electromagnetic waves

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What is the magnitude of the line charge density on the power line? Express your answer using two si...