Answer:
1.6% growth rate
43.75 years = doubling time.
Explanation:
40-24 = 1616/1000 = 0.016 x 100 = 1.6% growth rate
70/1.6 = 43.75 years = doubling time.
Answer:
Visible Light Absorption
Atoms and molecules contain electrons. It is often useful to think of these electrons as being attached to the atoms by springs. The electrons and their attached springs have a tendency to vibrate at specific frequencies. Similar to a tuning fork or even a musical instrument, the electrons of atoms have a natural frequency at which they tend to vibrate. When a light wave with that same natural frequency impinges upon an atom, then the electrons of that atom will be set into vibrational motion. (This is merely another example of the resonance principle introduced in Unit 11 of The Physics Classroom Tutorial.) If a light wave of a given frequency strikes a material with electrons having the same vibrational frequencies, then those electrons will absorb the energy of the light wave and transform it into vibrational motion. During its vibration, the electrons interact with neighboring atoms in such a manner as to convert its vibrational energy into thermal energy. Subsequently, the light wave with that given frequency is absorbed by the object, never again to be released in the form of light. So the selective absorption of light by a particular material occurs because the selected frequency of the light wave matches the frequency at which electrons in the atoms of that material vibrate. Since different atoms and molecules have different natural frequencies of vibration, they will selectively absorb different frequencies of visible light.
In this exercise we have to analyze the factors that cause Africa to have high unemployment, this is associated with the fact that:
- poor country
- many diseases
- degree of unemployment.
<h3>What is the cause of unemployment on the African continent?</h3>
South Africa, the most industrialized economy on the entire continent, was already in recession when the first wave of virus hit the country hard since last March. Months of relentless restrictions to contain the virus have stifled economic activity and destroyed tens of thousands of jobs.
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Answer :
Thanksgiving Day is a national holiday in the United States, and Thanksgiving 2019 occurs on Thursday, November 28. In 1621, the Plymouth colonists and Wampanoag Indians shared an autumn harvest feast that is acknowledged today as one of the first Thanksgiving celebrations in the colonies. For more than two centuries, days of thanksgiving were celebrated by individual colonies and states. It wasn’t until 1863, in the midst of the Civil War, that President Abraham Lincoln proclaimed a national Thanksgiving Day to be held each November.
The psychology’s interest in people’s self is known to be the way of an individual's though pattern as he or she views his or her traits, beliefs, and reasons for been in this world.
<h3>What is the psychology’s
interest of self?</h3>
In psychology, the ideal of self is said to be how a person or people sees her uniqueness, traits, beliefs, and reason for existence.
Note that the benefits and liabilities of self-esteem and self-serving pride is that if a person value themselves and they do have a good self-esteem, they tend to be secure and also feel worthy.
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