Aneutron consists of one "up" quark of charge +2e/3 and two "down" quarks each having charge -e/3. if we assume that the down quarks are 4.6 × 10-15 m apart inside the neutron, what is the magnitude of the electrostatic force between them?

The magnitude of the electrostatic force is 120.85 N

Explanation:

We can use Coulomb's law to find the electrostatic force between the down quarks.

In scalar form, Coulomb's law states that for charges and separated by a distance d, the magnitude of the electrostatic force F between them is:

where is Coulomb's constant.

Taking the values:

and knowing the value of the Coulomb's constant:

Taking all this in consideration:

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

explanation:

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