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wolverine [178]
3 years ago
11

In the classical view of the atom, Bohr pictured electrons orbiting the positively charged nucleus similar to how the planets or

bit the Sun. While this picture was not entirely correct, it provides a good framework in which to make calculations about the energies of electrons. Different from the predictions of Newtonian mechanics, which allows any energy to be possible, Bohr described the electron orbits (now called orbitals) as having specific energies. Rank the following electron energy states according to their electron energies.
Rank from highest to lowest energies.
- first excited state- ground state
- third excited state
- second excited state
Physics
1 answer:
stiks02 [169]3 years ago
3 0

Answer:

The energetic order third excited > seconds excited > first excited > ground

Explanation:

Bohr's atomic model includes an integer that is responsible for the quantization of energy

       E = - 13.6 /n²  eV

Where n is the so-called principal quantum number, it is an integer with values ​​of

     n = 1, 2, 3… inf

For n = 1 have the so-called ground state that is the one with the lowest energy, for the minus sign in the formula E1 = -13.6 eV

For n = 2 it is the first excited state has the most energy than the ground state,

E2 = 13.6 / 4 = -3.4eV

For n = 3 we have the second excited state, E3 = -13.6 / 9 = -1.5 eV

For n = 4 we have the third excited state, E4 = -0.85 eV

The energetic order of the states is

E4 > E3 > E2 >E1

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In a coiled spring, the particles of the medium vibrate to and fro about their
Kitty [74]

Answer:

In a coiled spring, the particles of the medium vibrate to and fro about their mean positions at an angle of

A. 0° to the direction of propagation of wave

Explanation:

The waveform of a coiled spring is a longitudinal wave, which is made up of vibrations of the spring which are in the same direction as the direction of the wave's advancement

As the coiled spring experiences a compression force and is then released, it experiences a sequential movement of the wave of the compression that extends the length of the coiled spring which is then followed by a stretched section of the coiled spring in a repeatedly such that the direction of vibration of particles of the coiled is parallel to direction of motion of the wave

From which we have that the angle between the direction of vibration of the particles of the coiled spring and the direction of propagation of the wave is 0°.

8 0
3 years ago
Refer back to your data. List all indicators of chemical change that you observed.
Xelga [282]
Below are the 5 main indicators of chemical change. 

Chemical change indicators:<span>
Color change
</span>Temperature change
Precipitate formation<span>
Odor
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I hope this helps!</span>
3 0
3 years ago
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Consider the graph below that represents the variation of the velocity with respect to time of an object moving along the x - ax
vazorg [7]

In a velocity-time graph, the area under the curve represents the distance.

The distance traveled from 10s to 18 s is

\begin{gathered} d\text{ = }\frac{1}{2}\times10\times(18-10) \\ =\text{ 40 m} \end{gathered}

Final Answer: The distance traveled is 40 m from time 10 s to 18 s.

3 0
1 year ago
Correct answer will receive a Brainliest.
san4es73 [151]

Answer:

C

Explanation:

The period of a pendulum is found by the equation: T = 2pi*sqrt(L/g). Let the original length be L and the original period be T. The length increased by a factor of 4, so it’s new length is 4L. We get that the new period is 2pi*sqrt(4L/g) = 2pi*2sqrt(L/g) = 4pi*sqrt(L/g). We can see that the period increased by a factor of 2 because the original period, T, equals 2pi*sqrt(L/g) and the new period is 4pi*sqrt(L/g) = 2(2pi*sqrt(L/g)) = 2T. Therefore, the new period is 2(1.4) = 2.8

I hope this helps! :)

4 0
3 years ago
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A coach is hitting pop flies to the outfielders. if the baseball (m= 145 g) stays in contact with the bat for 0.04 s and leaves
vekshin1
At the start, the ball is at rest and therefore, u=0 m/s. As it leaves the bat, v= 50 m/s

From equations of motion, v=u+at = at (since u=o)
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From Newton's second law,
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4 0
3 years ago
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