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Which of the following is the name given to a situation in which one fission reaction innstigates exactly one more fission reaction?
A runaway chain reaction.
It is called super criticality, with KEffective > 1.
When one fission reaction instigates more than one or more fission reactions it is called a Chain Reaction.
KEffective is the neutron multiplication factor which is an indication of whether a reaction is stable (=1), increasing (>1), or decreasing (<1). Related to this is the reactor period, which is the time it take for the power to change by a factor of e, 2.71828. At KEffective = 1, period is infinity, so the power is stable.
In a weapon, KEffective is almost 2.5, because the average number of neutrons released per fission event is 2.5. In this case, if each neutron causes another fission event, the reactor period is extremely short, on the order of milliseconds, or even shorter, and the power becomes extremely large in a very short period of time.
Complicating this is the tendency for the core to become subcritical (KEffective < 1) due to thermal or density change, which is why the "art" of nuclear weapon design is more involved in how to hold the core together, than it is in actually assembling the core.
What else can I help you with?
Wherever there is an action force there must be a reaction force which?
acts in the opposite direction with equal magnitude. This is described by Newton's third law of motion: for every action, there is an equal and opposite reaction.
For a sustainable fission reaction each fission must produce exactly additional fission reaction(s).?
A stable nuclear fission reaction will be sustained if every fission produces one additional fission reaction.
Why must neutrons in a chain reaction be controlled?
Neutrons in a chain reaction must be controlled to prevent the reaction from reaching a critical mass and becoming uncontrollable. By controlling the rate of neutron production and absorption, engineers can manage the reaction to ensure it remains stable and does not lead to a runaway nuclear event.
What information does gibb's free energy give about reaction?
Gibb's free energy (ΔG) indicates whether a reaction is spontaneous (ΔG < 0) or non-spontaneous (ΔG > 0) at a given temperature and pressure. A negative ΔG means the reaction releases usable energy, while a positive ΔG means energy input is required for the reaction to proceed. Additionally, the magnitude of ΔG can provide insights into the extent to which a reaction will proceed towards completion.
What is following distance?
Following distance is the space between your vehicle and the vehicle in front of you while driving. Maintaining a safe following distance allows you more time to react to sudden stops or changes in traffic situations, helping to prevent rear-end collisions. The general rule is to keep at least a 3-second distance in good weather conditions, and more in adverse conditions.
Does alcohol speeds your reflexes and reaction time?
Exactly the opposite. It SLOWS your reflexes and reaction times.
What is a basic situation and Is it like a summary?
Yes, it is exactly like a summary.
Which of the following has exactly five significant figures?
102.03
Which of the following have exactly five significant figures?
302.05
What of the following has exactly five significant figures?
203.05
The enthalpy change for a chemical reaction exactly as it is written is what?
The enthalpy change for a chemical reaction exactly as it is written is known as the standard enthalpy of reaction (∆H°). It represents the amount of heat exchanged with the surroundings at constant pressure during a reaction happening under standard conditions (typically at 298 K and 1 atm pressure).
What is it called when one fission reaction instigate exactly one more fission reaction?
It is called criticality, with KEffective = 1. controled
Which one of the following has exactly three significant figures?
30.9
Which of the following has exactly 3 significant figures?
30.3 cm
Which one of the following has exactly 3 significant figures?
30.5
What exactly return means in c program?
exactly: leave this function, and (optionally) pass the following value to the caller.
How do you get over your ex fiance and still keep him as a friend?
I don't know. If you find out let me know, because I'm in exactly the same situation. I don't know. If you find out let me know, because I'm in exactly the same situation.
