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guajiro [1.7K]
3 years ago
6

We want to get a better, more concrete idea of the strength of the electric force. So imagine you could remove all the electrons

from 1 mL (1 cubic centimeter) of water. Dump the electrons on yourself, and put the electron-free nuclei (protons and neutrons) on the moon. Estimate how much force will there be between the positive and negative charges? (Of course you have to look up the earth-moon distance.) What fraction of your weight is that force? How many electrons do you have in 1 cc? Consider that virtually all the mass is given by protons and neutrons. Since the proton and the neutron have almost equal masses, and most atoms have equal numbers of protons and neutrons, so the water mass, divided by 2, is the mass of protons. Once you know the total mass of protons, divide by the mass of a single proton and you have the total number of protons. Knowing that, how many electrons do you then suppose you have?)

Physics
2 answers:
Flauer [41]3 years ago
6 0

Answer:

The electric force is 2.2962c + 005 times the gravity force on average human.

Explanation:

Get mass of water in gm

get the mass of protons in 1mL water

get number of electrons that should be present in 1mL of water

electric force Np (protons number), Ne (electrons number)

then get the ratio between the Electric force and weight of average human body;

see workings in attached picture.

Advocard [28]3 years ago
5 0

Answer:

Explanation:

solution answered below

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Answer:

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Explanation:

By energy conservation principle, puling an elastic bow with a force, for a given distance, performs work which is converted to the potential energy of the arrow at height

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The distance the elastic bow is pulled, d = 65.0 cm = 0.65 m

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Work done, W = Force × Distance moved in the direction of the force

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The work done in pulling the arrow, W = F × d

By energy conservation, we have;

The work done in pulling the arrow, W = The potential energy gained by the arrow, P.E.

W = P.E.

The potential energy gained by the arrow, P.E. = m·g·h

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The force the archer need to pull in order to achieve the height, F ≈ 101.8 N.

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