Q. 15

# Suppose an attrac

Given:

The attractive nuclear force between two protons is, (a)The power of e must be dimensionless.

Thus,  Hence, SI unit of k is m.

Now,   Let us replace the formula with SI units Hence, SI unit of C is Nm2

(b)

Given,

Separation between the protons, r = 5fermi = 5 × 10-15 m.

We know that the charge on a proton is q = 1.6 × 10-19C.

Now,

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Formula used:

By Coulomb’s law, the electric force is given by: Where ϵ0 is the permittivity of free space

k is the electrostatic constant

q1 and q2 are the magnitude of charges

r is the distance of separation between the charges

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The electric force between the two protons is given by: Also, the nuclear force between the protons is given by: These two forces balance each other.

Fe=Fn

kq2=Ce-kr   Rate this question :

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