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# Education homework help

Education homework help. In the Bohr atom electrons are assumed to be fairly discrete, fairly physical particles, like very very small negatively charged balls which travel in circular motion (like the planets) around the positively charged nucleus at special radii, a result of “quantizing” the angular momentum (restricting it to list of allowed values), via ## m_{e} v r = n h/{2 pi} ##. This means that only particular energy are allowed, ##E_n =- {Z^2 R_e}/n^2 ##, where {E_n} is the energy of the nth orbit, Z is the charge on the nucleus (atomic number) and ##R_e## is the Rydberg energy, which is 13.6 eV.
The wave model is the full quantum mechanical treatment of the atom and essentially stands today. The electron is NOT discrete, instead in imagined a “smear” of probability.

The Bohr atom (sometimes called the Bohr-Rutherford model) was the result of two results of early 20th century science : the gold foil experiment preformed at Rutherford’s lab, by his minions, Hans Geiger and Ernest Marsden; and the developing quantum theory.
The gold foil experiment found that the atom consisted of a very small and heavy piece of positive charge, now called the nucleus, and smaller electrons which existed around it, stuck by electrostatic forces (negative charges like to hang out with things that are positively charges). The ONLY way this could be understood at the time was that the electrons go around the nucleus like planets around the sun. This is sometimes called the Rutherford model.
The quantum theory of light had fixed the ultraviolet catastrophe which occurred when modelling heat emission (called a Blackbody ) and was used by Einstein to explain the photoelectric effect. It involved treating the energy of light, which had previously been considered to be continuous (of any value), as now only occurring in discrete indivisible pieces called “quanta,” a piece of light, which we now call a photon, energy was equal to frequency times a constant, ##E_{ph}=h f## and it worked great.
This logic was applied to the atom, confining the electrons to special radii, by limiting the angular momentum ## m_{e} v r = n h/{2 pi} ##, and only particular energies and radii were allowed, ##E_n =- {Z^2 R_e}/n^2 ##, where {E_n} is the energy of the nth orbit, Z is the charge on the nucleus (atomic number) and ##R_e## is the Rydberg energy, which is 13.6 eV.
This model for the first time explained the spectra of the hydrogen atom,a special pattern of light. It was caused by electrons rising and falling between these special radii, called orbits and emitting or absorbing light equal to the difference in energy required. This was HUGE. Scientists had been measuring spectra for decades, but had had no explanation for the patterns of light atoms and molecules produced. Now we had hydrogen done. With some tweaking it also allowed from some explanation of the valences. However, it could not explain the spectra of any element other then hydrogen or the subtleties of valences or the “blocking” in the periodic table.
So a semi-quantum treatment of electrons moving about near a nucleus was a great step forward, but not far enough. The wave mechanical model goes further, a full quantum treatment, it had to wait for quantum mechanics to exist. The missing pieces were the development of the Pauli exclusion principal, wave-particle duality, due mostly to Louis de Broglie, that all particles exist in a blurry wave of probability and the equation that governs them is the Schrdinger Equation, both developed in the mid 1920’s.
The Wave model of the atom come from building, then solving the Schrdinger Equation for electrons bond by a nucleus, while there are may may refinements to this, it essentially stand today as how we model matter. The details can be found in a 3rd year QM course, but you care about the results! The wave model explains atomic shell filling, the solving gives several types of orbitals, each with different allowed electrons, the s shell with 2, the p shell with 6, the shell with 10 and the f shell with 14. This explains the
“blocks” in the periodic table, ie each row of transitional metals are filling a d shell, the first 3d, second 4d and the third fills 5d. Orbitals are probability maps of where the electron tends to be and bonds are two atomic orbitals overlapping and joining.
It also explain ALL atomic spectra, in extreme detail and molecular spectra of what we’ve had time to compute and when applied to crystals explains the properties of solids. . It is WILDLY successful and but does come with a draw back. In the Bohr model electron were easier to understand, they were charged balls, now we have blurry probability distributions. You brain was designed to picture things on the scale of basket balls, you can understand how they how and …are. Electron DO NOT BEHAVE LIKE BASKET BALLS. Quantum results can be hard to get you hard around, but that’s ok, it’s very very well tested, this is how the world is.Education homework help

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Cyberespionage E-Commerce.

Cyberespionage E-Commerce

## DP 3001 Walden University Public Health Trends on Disparities Handout

online assignment help DP 3001 Walden University Public Health Trends on Disparities Handout.

Instructions
Before submitting your Assessment, carefully review the rubric. This is the same rubric the assessor will use to evaluate your submission and it provides detailed criteria describing how to achieve or master the Competency. Many students find that understanding the requirements of the Assessment and the rubric criteria help them direct their focus and use their time most productively.

Disparities in Public Health Trends Educational Handout
You have been asked to create an educational handout for incoming employees of a healthcare organization to ensure that they fully understand the impact of public health trends on disparities. The handout should include visual elements and text that address public health’s history of influential trends and the issue of disparities, an explanation of the relationship between health trends and disparities, and a spotlight section that uses a specific public health trend to analyze its impact on public health and to address its disparities, contributing causes, and possible interventions.

To begin, develop an appropriate title and choose an appropriate image to display.

Note: All images used in your handout should be free from copyright restrictions.

Describe five public health trends that occurred in the last 100 years that have been instrumental in public health advancements or achievements.
Explain how public health trends are related to disparities that exist locally, nationally, and globally.
Select and spotlight one of the previously described public health trends/achievements/advancements, and explain how it informs public health.
Analyze the disparities within the trend.
Analyze what contributes to the trend and disparities, including social determinants of health.
Recommend a strategy to address one or more disparities.

NOTE: Use images appropriately. Do not copy and paste images from the Internet, as this is a copyright issue. You can either ask permission of the owner of the image, create your own graphic, or find one from one of the many resources that offer free, royalty-free images.
DP 3001 Walden University Public Health Trends on Disparities Handout

## MGT 402 SEU Start up Business Plan for Magpie Pharmacy Essay

MGT 402 SEU Start up Business Plan for Magpie Pharmacy Essay.

MGT 402 – Assignment Rubric

Marks:5
Percentage     100

Exceeds Expectation

Meets Expectation

Below Expectation

Percentage: 50
Marks: 2.5

76-100

51-75

0-50

Requirements

Includes all of the required components, as   specified in the assignment.

Includes most of the required components,     as specified in the assignment.

Includes some of the required components,     as specified in the assignment.

Percentage: 50
Marks: 2.5

76-100

51-75

0-50

Content

Demonstrates     substantial and extensive knowledge of the materials, with no errors or     major omissions.

Demonstrates     adequate knowledge of the materials; may include some minor errors or     omissions.

Demonstrates     fair knowledge of the materials and/or includes some major errors or     omissions.
MGT 402 SEU Start up Business Plan for Magpie Pharmacy Essay

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