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No, in fact nuclear fission of U-235 proceeds quite well at temperatures of 300-400 degC, and slow or thermalised neutrons are captured more readily than fast neutrons, so having a relatively cool moderator helps. The fuel used is solid uranium dioxide which must not approach its melting point. You are probably thinking of nuclear fusion, where a gaseous plasma is used, and experiments in tokamaks have to get this plasma up to hundreds of millions of degrees for fusion to take place.
What else can I help you with?
What produces more energy fusion or fission?
Yes and No. This really depends on what you mean.If you are talking about a single event, the fission of a uranium atom typically releases about 200 million electron volts (MeV). By contrast, the fusion of a deuterium atom with a tritium atom produces about 17.6 MeV. This would seem to mean that fission produces more energy. And it does - per event.On the other hand, a deuterium atom has an atomic mass of 2, and a tritium atom has an atomic mass of 3. So the fusion involving an atomic mass of 5 produces 17.6 MeV. If we had 47 of these, the total mass would be about 235 (roughly the same as 235U) and the result would be 47x17.6 or 827.2. By contrast, 235U has an atomic mass of roughly 235. And the fission involving the atomic mass of 235 produces 200 MeV. This means that the fusion of an equal mass produces (in this particular comparison) a bit more than four times as much power. So fusion can be more powerful - by mass.But fusion of elements more massive than iron is endothermic. So it is always less powerful than fission.Also, there is a practical consideration, if you are interested in practicalities. And this relates to the amount of fuel available. We will run out of uranium and thorium ores. When that happens, fission power will no longer be possible. We will possibly never run out of fuel for fusion fuels. So fusion is a more powerful power source over time. But of course, by this standard, wind is more powerful than fission, because we will run out of the ores, but the wind will just blow on and on.
How hot will magnesium burn?
Magnesium's flame temperature can be 3,100 °C (5,610 °F). Its autoignition temperature (the temperature at which it commences burning) is 473 °C (883 °F).
3- At what specific gravity of salt water does salt start to precipitate?
Salt starts to precipitate out of seawater at a specific gravity of around 1.17. This can vary depending on factors such as temperature and the type of salt.
Can the Navy transfer 11 million dollars RDT and E funds from one program element to another without prior approval of Congress?
No, the Navy cannot transfer 11 million dollars RDT and E funds from one program element to another without prior approval from Congress. Any reprogramming of funds over a certain threshold requires congressional approval to ensure transparency and accountability in the use of government funds.
Which of the following could NOT be the temperature of a solid?
You are missing half the question. According to Wikipedia (and other sources), the substance with the highest melting point is: Tantalum hafnium carbide (Ta4HfC5) MP: 4488 K (4215 °C, 7619 °F). It is possible that other higher temperature solids will be found, but one would not expect to find any solids with a melting point a full order of magnitude higher (40,000 °C). On can alter the temperature & pressure and raise the melting point somewhat. But at some point one would loose the essence of a solid and end up with a plasma. The core of the sun is 13,600,000 °K (Wikipedia), and some estimates are as high as 15 or 16 million degrees K. It is believed that matter exists in the form of plasma at that temperature.
Why are the high temperatures produced by the explosion of a fission bomb necessary to initiate fusion in a thermonuclear device?
On the order of 10 million K.
What temperature does the sun reach?
The temperature of the sun varies significantly across its different layers. The core, where nuclear fusion occurs, reaches temperatures of about 15 million degrees Celsius (27 million degrees Fahrenheit). The surface, or photosphere, has a temperature of around 5,500 degrees Celsius (9,932 degrees Fahrenheit), while the outer atmosphere, known as the corona, can reach temperatures between 1 to 3 million degrees Celsius (1.8 to 5.4 million degrees Fahrenheit).
What is the temperature which fusion of hydrogen into helium begins?
Fusion of hydrogen into helium typically begins at temperatures around 10 million degrees Celsius. At this temperature, hydrogen nuclei can overcome their electrostatic repulsion and come close enough for the strong nuclear force to initiate fusion reactions.
How egsactly hot is the Sun?
The temperature of the Sun's surface is about 5,500 degrees Celsius (9,932 degrees Fahrenheit). However, the core of the Sun reaches temperatures of about 15 million degrees Celsius (27 million degrees Fahrenheit).
What is the highest temperature on the sun?
The highest temperature on the sun's surface is around 10,000 degrees Fahrenheit (5,500 degrees Celsius). In the sun's core, temperatures can reach up to 27 million degrees Fahrenheit (15 million degrees Celsius).
What approximate temperature is the sun?
The surface temperature of the Sun, or its photosphere, is about 5,500 degrees Celsius (approximately 9,932 degrees Fahrenheit). However, temperatures increase significantly in the Sun's core, reaching around 15 million degrees Celsius (27 million degrees Fahrenheit), where nuclear fusion occurs. The temperature varies across different layers of the Sun, with the corona, or outer atmosphere, reaching temperatures of about 1 to 3 million degrees Celsius (1.8 to 5.4 million degrees Fahrenheit).
What is the initial temperature of a nuclear detonation?
The initial temperature of a nuclear detonation can reach temperatures of millions of degrees Celsius. These extreme temperatures are a result of the intense energy released during the nuclear fission or fusion process.
Lowest to highest temperatures in the sun?
The lowest temperature in the sun's visible surface (photosphere) is around 5,500 degrees Celsius, while the highest temperatures in the sun's core can reach up to 15 million degrees Celsius. However, in the sun's outer atmosphere (corona), temperatures can soar to several million degrees Celsius.
Is 27million degrees f the same as 15million degrees c?
No, 27 million degrees Fahrenheit is not the same as 15 million degrees Celsius. To convert Fahrenheit to Celsius, you would need to subtract 32 and then divide by 1.8. The two temperatures would not be equivalent in this case.
Where is the hottest place in your Solar System?
The hottest place in the Solar System is the Sun's core, where temperatures can reach up to 27 million degrees Fahrenheit (15 million degrees Celsius). The surface of the Sun is cooler, but still extremely hot, with temperatures of about 10,000 degrees Fahrenheit (5,500 degrees Celsius).
Sun surface temperature?
The sun has no real surface, just different layers of plasma. The layer of the sun that we see is called the "photosphere." The temperatures of the different layers are shown below -- Center -- 27-million degrees Convective zone -- about 7-million degrees Photosphere -- 10,300 degrees Chromosphere -- 22,900 degrees Corona -- 2-million degrees
How hot the sun its?
The temperature at the core of the Sun is around 27 million degrees Fahrenheit (15 million degrees Celsius). Surface temperatures are much cooler, around 10,000 degrees Fahrenheit (5,500 degrees Celsius).
