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vekshin1
3 years ago
9

calculate the diameter of the fifteen orbit of the hydrogen atom if the diameter of the innermost orbit is 1.06 A

Physics
2 answers:
mash [69]3 years ago
8 0
We know, dₓ α n² d₁

For n = 15 (15th Orbit)

It would be: d₁₅ = 15² * 1.06

d₁₅ = 238.5 A

In short, Your Answer would be: 238.5 A

Hope this helps!
Zarrin [17]3 years ago
8 0

Answer:

r_{n} =n^{2} *r_{1}=15^{2} *0.53A=119.25A

Explanation:

Following the Bohr model radii, where r_{n} =n^{2} *r_{1} for the hydrogen atom, we can calculate the nth radius if we know the first one, as long as n is a whole number.

The problem gives us the first diameter, and we also know that d=2r so r_{1}=\frac{d_{1} }{2}

r_{1}=\frac{d_{1} }{2}=\frac{1.06 A}{2} =0.53A

Now we change this value in the Bohr model radii formula:

r_{n} =n^{2} *r_{1}=15^{2} *0.53A=119.25A

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3 years ago
While moving a box 10.0 m across the floor, Sam pushes with a force of 150 N to the right. The force friction acting on the box
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Answer:

Explanation:required formula is

W 1=F*S

W1=work done by Sam =?

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S=displacement =10m

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please feel free to ask if you have any questions

4 0
3 years ago
Hey!
pav-90 [236]

Answer:

Hydraulic pressure exerted on glass slab, ρ=10 atm

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Bulk modulus, B=P/(ΔV/V)

where,

ΔV/V= Fractional change in volume

ΔV/V=P/B

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Therefore, the fractional change in the volume of the glass slab is 2.73×10^-5

Hope it helps

3 0
2 years ago
Read 2 more answers
explain why for thousands of years people believed that stars moved across Earth's sky. Explain why we now have a different expl
Anarel [89]

Answer:

Ptolemy proposed a model, he reference system is centered on the Earth

Copernicus, proposed a deferent system,  this system is centered on the Sun, where it is at the origin of the system

Explanation:

Thousands of years ago, Ptolemy proposed a model to explain the movement of the planets and stars in the sky, in this model the reference system is centered on the Earth, so each body is orbiting in different spheres around the Earth as its center, this system had very complicated calculations and curves to be able to explain the orbits of the planets.

More recently Copernicus, proposed a deferent system, this system is centered on the Sun, where it is at the origin of the system, in this system the movement of the planets are ellipses, which is a much simpler explanation and has been widely accepted, in current systems the reference system is fixed in the bodies more massive, since this simplifies the explanation of the movements.

6 0
3 years ago
Which of the following is an accurate description of synaptic pruning?
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Answer options:

A) Some connections are lost because critical stages of development were missed.

B) Some connections are lost so others can be strengthened.

C) Some connections are lost because of experimentation with drugs or alcohol.

D) Some connections are lost so that children become less dependent and are less tied to their parents.

Answer:

B) Some connections are lost so others can be strengthened.

Explanation:

Synaptic pruning refers to a natural process that occurs in the brain between childhood and adulthood. Extra synaptic connections are eliminated in order to increase the efficiency of neuronal communications. It is thought to be the brain’s way of removing connections that are no longer needed.

6 0
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