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What is caused when critical mass is reached?
a chain reaction
What happens if a nuclear chain reaction is not controlled?
The reactor fuel would overheat, melt, and fall apart.
What is the critical mass of uranium-238?
Each isotope has a different critical mass. U235 is used because the mass needed to cause a reaction is smaller than almost all other isotopes. This critical mass is calculated as( 3.001 x 9.987 to the 11th power) Divided by the weight of one nuclei X 2.5675 (x 10 to the 24th power) divided by mass. This equals 7.702 X 10 to the 13th power divided by mass. You can tell by this calculation that critical mass for u235 is very low at about 1.3 kg. Best regards, Bruce
The most effective shape for achieving critical mass is a?
sphere
What is the most effective shape for achieving critical mass?
A sphere
What is caused when critical mass is reached?
a chain reaction
Is americium explosive?
Americium can be explosive only in the situation when the critical mass is reached; but because americium is scarce and this mass is great this situation was impossible until today.
What is the amount of fissionable material required to continue a reaction at a constant rate?
At less than critical mass, there are fewer "targets" for neutrons to strike, fission, and release more neutrons. As a result, the reaction dies out.
What is an example of critical in a sentence?
The patient's blood pressure had reached critical levels.
When was Critical Mass - Catholic rock - created?
Critical Mass - Catholic rock - was created in 1996.
Is plutonium safe?
Plutonium is radioactive, toxic, flammable in some conditions, can explode if the critical mass is reached; plutonium can be safe only if all the working rules are strictly observed.
When was Critical Mass - Threshold album - created?
Critical Mass - Threshold album - was created on 2002-09-02.
What happens when air has reached its dew point?
condensation Another question that follows: As an air mass cools to its dew point; relative humidity increases
Black hole formation?
a black hole froms when a massive star exhauists it's neclaer fule and goes through a supernova. The core collapese onto itself, until it reached critical mass.
Do nuclear reactors have critical mass?
We know that critical mass can be achieved in a nuclear reactor. If it could not, we'd not be able to get a chain reaction and generate heat to generate power. Reactors don't have critical mass when the control rods are in, but pull the rods, start the reactor up and away you go!
What is upper sub-critical limit for U235 mass?
The critical mass depends on the shape; I don't think there is an upper limit to that.For the case of a sphere, the critical mass for U-235 is 52 kg. The corresponding diameter of the sphere is 17 cm.
What have been the parties that operated the Internet?
it started out arpnet run by the us gov connected via military and educational computersthen companies began connecting their computers to itwhen it reached critical mass it became the internet.
