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Lerok [7]
3 years ago
14

Calculate the density of a (7,3)Li atom (with a radius of 152 pm) and of its nucleus. Explain your

Physics
1 answer:
k0ka [10]3 years ago
8 0
The most compelling evidence that nucleons are closely packed in a nucleus is that the radius of a nucleus, r, is found to be given approximately by r = r0A1/3, where r0 = 1.2 fm and A is the mass number of the nucleus.
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An ideal spring with spring constant k is hung from the ceiling. The initial length of the spring, with nothing attached to the
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The mass m of the object = 5.25 kg

<h3>Further explanation</h3>

Given

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Δx= 30 cm - 15 cm = 15 cm

Required

the mass m

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Hooke's Law

F = k.Δx

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Which of the following is not an air pollutant?
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Positive charge Q is distributed uniformly along the x-axis fromx=0 to x=a. A positive point charge q is located on the positive
dybincka [34]

Answer:

a. b- x= y

dx = -dy

b. F = \frac{-kQqi}{r (a+r)}

c.  F = \frac{-kQqi}{r^{2} }

Explanation:

a. x components:

dE = \frac{kdq}{(a+r-x^{2}) } \\

     = \frac{kQdx}{(a(a+r-x)^2}

Integrating and solving gives:

b- x= y

dx = -dy

b. the force is given by the equation derived from (a.):

F = \frac{-kQqi}{r (a+r)}

c. Given that r>>a, the expression becomes:

F = \frac{-kQqi}{r^{2} }

Explanation:

When the size of the charge distribution is less than the distance to the deviation point of the charge then the charge distribution would produce the same effect such as a linear charge.

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