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Paraphin [41]
3 years ago
15

If the coefficient of kinetic friction between a crate and the floor is 0.20,

Physics
1 answer:
kow [346]3 years ago
4 0

Answer:

0.3 newtons

Explanation:

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Explanation:

Given,

The mean distance between the electron and the nucleus, x = 1 x 10⁻¹⁰ m

The number of protons present in the nucleus of the hydrogen atom is 1.

The charge of the proton and electron,  q = 1.602 x 10⁻¹⁹ C

Since they have opposite charges, the force between them is attractive,

The coulomb law of force between two charges is given by the formula,

                          <em> F=\frac{1}{4\pi\epsilon_{0}}\frac{qq}{x^{2}}</em>

                           \frac{1}{4\pi\epsilon_{0}}   = 9 x 10⁹ Nm²C⁻²

Substituting the values in the above equation

                              F = 9 x 10⁹ X (1.602 x 10⁻¹⁹)² / (1 x 10⁻¹⁰)²

                                 = 2.31 x 10⁻⁸  N

Hence, the force between the nucleus and electron of hydrogen atom is, F = 2.3 x 10⁻⁸  N

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