Where did arthur holmes conduct his research?

Using Wien’s Law, estimate the wavelength at which these common materials radiate their peak brightness (show your work):

SSSSS [86.1K]

Explanation:

Wien’s Law:

$\lambda _{max}\propto \frac{1}{temperature}$

The law states that the wavelength at which black body emits maximum heat is inversely proportional to the temperature of the body in Kelvins.

$\lambda _{max}=\frac{2.9\times 10^{-3}}{T}$

1) Walls at 300 K

$\lambda _{max}=\frac{2.9\times 10^{-3} mK}{300 K}$

$\lambda _{max}=9.666\times 10^{-6} m$

2) Ice water at 273 K :

$\lambda _{max}=\frac{2.9\times 10^{-3} mK}{273 K}$

$\lambda _{max}=1.062\times 10^{-5} m$

3) Hot water at 373 K :

$\lambda _{max}=\frac{2.9\times 10^{-3} mK}{373 K}$

$\lambda _{max}=7.775\times 10^{-6} m$

4)Skin at 310 K:

$\lambda _{max}=\frac{2.9\times 10^{-3} mK}{310 K}$

$\lambda _{max}=9.355\times 10^{-6} m$

5)An incandescent light bulb at 3000 K

$\lambda _{max}=\frac{2.9\times 10^{-3} mK}{3000 K}$

$\lambda _{max}=9.666\times 10^{-7} m$

3 0

3 years ago

What type of political entity is Israel?

Andrej [43]

Israel is a parliamentary democracy consisting of legislative, executive and judicial branches. Its institutions are the presidency, the Knesset (parliament), the government (cabinet of ministers) and the judiciary. :)

3 0

3 years ago

Which of the following regarding the carrying capacity of the earth is FALSE?

d1i1m1o1n [39]

Answer:

C. It is larger in urban areas

Explanation:

Carrying capacity is the number or the amount of pressure of species on the earth's ecological system can bear or can carryforwards and can be sustained by giving food, water, and necessity available to the environment.

The ecological footprint is a measure or a way to estimate the pressure on the natural resources by these species by taking in the future possibilities and limitations. Estimated in terms of the demands and the biocapacity of the ecosystem.

<u>The urban area carrying capacity is a result of interaction of the multiple subsystems and due to the large human activities the urban areas have low levels of the carrying capacity as they are not natural settings and put pressure and huge load over resources.</u>

7 0

3 years ago

How do tsunamis affect the biosphere, lithosphere, atmosphere and hydrosphere?

topjm [15]

Go to https://phs-year9.wikispaces.com/Group+4-+Tsunami%27s

3 0

3 years ago

GEOGRAFIA opisz zmiany w przemysle ktore dokonały sie w calych niemczech oraz w nadrenii polnocnej- westfalii od lat 60 xx wieku

vivado [14]

Answer:

The term "German economic miracle" (in German, Wirtschaftswunder, economic miracle) was first used in the British newspaper The Times in 1960 and describes the rapid reconstruction and development of variations in West Germany and Austria after World War II In part thanks to the Marshall Plan for Europe caused by fears that they will realize the same conditions that were specified for Germany in the interwar period (1919-1939). It started with the replacement of the old Reichsmark with the Deutsche Mark as currency in Germany and with the Austrian shilling in Austria, and it was a lasting period of low inflation and rapid industrial growth. In Austria, foreign aid, and the development of efficient practices and the nascent industry originated a similar process. This era of economic development caused post-war devastated nations to become economically developed countries. With the founding of the European Common Market, Germany's growth contrasts further with England's economic difficulties.

While in North Rhine-Westphalia finding a common identity for Lippe, Westphalia and Rhineland was a great challenge in the country's early years. The greatest challenges in the postwar period were reconstruction and the establishment of a democratic state. Next, it had to redesign the economic structure developed as a result of the decline of the mining industry that was a central theme of national policy.

Explanation:

North Rhine-Westphalia or North Rhine-Westphalia (German: Nordrhein-Westfalen) is one of the 16 federal states of Germany. North Rhine-Westphalia currently has about 18 million inhabitants, contributing approximately 22% of Germany's gross domestic product and covering an area of 34 083 km². North Rhine-Westphalia is located in the westernmost part of Germany and shares borders with Belgium and the Netherlands, and internally borders the federal states of Lower Saxony to the north, Rhineland-Palatinate to the south and Hesse to the southeast. The state capital is Düsseldorf, and other very populated and important cities are Mönchengladbach, Cologne, Leverkusen, Dortmund, Duisburg, Bonn, Bochum, Münster, Aachen or Gelsenkirchen.

4 0

3 years ago