Elements emit colours when heated because electrons in atoms can have only certain allowed energies.Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours. See, for example, mercury and neon above. Those colours are as distinctive to each element as fingerprints are to people.
Answer: Radio waves has the longest wavelength and Gamma rays has the shortage wavelength.
When wavelength increase and frequency decrease it is related to the energy of each type of radiation.
Explanation: The wavelength of Gamma rays is less than 10 pico meter and energy of Gamma rays is greater than 100kev while the wavelength of radiowaves is 100m to 100km and energy is 100ev to 100kev.
Energy is inversely proportional to wavelength so Gamma rays which have shortage wavelength will have highest energy and radio waves which have longest wavelength will have minimum energy
E=hc/wavelength
European establishment of trading posts in Asia and Africa affect politics in these regions (1450-1750) in that the establishment of new trading-post empires by the Europeans in Africa and Asia was advantageous for the kings and traders who participated in the emerging global trade networks, but these empires also had an impact on the strength of the governments in interior West and Central Africa.
<h3>What was the effect of the trading post about?</h3>
While other foods were introduced to the Americas by African slaves, Europeans brought fruit trees, wheat, sugar, and domesticated animals (horses, cattle, and pigs okra, rice)
The introduction of European agriculture and settlement methods to the Americas during the period of European colonization frequently resulted in soil depletion and deforestation, which had an impact on the physical environment. Funding for the visual and performing arts, even for popular audiences, surged along with an increase in literacy and an increased emphasis on innovation and scientific investigation as merchant profits rose and governments raked in more taxes.
Slavery in Africa kept on the practice of both exporting slaves to the Mediterranean and the Indian Ocean in addition to continuing the customary practice of integrating mostly female slaves into families.
Therefore, Royally incorporated European monopoly firms and the flow of silver from the Spanish colonies in the Americas to buy Asian items for the Atlantic markets helped to promote the new global circulation of goods. Regional markets kept expanding thanks to established business methods and fresh, transoceanic shipping services created by European merchants.
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Answer:
0.027 cubic ft/min
Explanation:
Volume of water is V=V(t) Depth of water is h=h(t)
The relationship between V and h is
V=π/3.r2.h
Let
h0= the height of the cylinder = 24ft, r0= the radius of the opening = 10ft.
Since water level (h) rise with respect to flow rate we find an expression for r and substitute into V
r/h = r0/h0= 10/24 = 5/12
r = (5/12) h,
Substitute for r in V
so,
V=1/3.π.(h2)square = 1/3.π. 25/144.(h3)
When
h= 16ft
and dV/dt = 20ft3/min
,
dV/dt =1/3*π*25/144*h3*(dh/dt)
20ft3/min= 1/3*π* 25/144*h3*(dh/dt)
20 = 1/3*π*(16)3.(dh/dt)
Make dh/DT subject of formula
dh/dt=(20*3*144)/(25*π*4096) = 8640/321740.8
=
dh/dt= 0.027 ft3/min
