Nuclear Physics
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Steeeve
Steeeve is an IT guru
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PHYSICS
Nuclear Physics
Mass Defect
Mass defect reveals how 'missing' mass fuels the immense power of atomic nuclei
23 hours ago
0
Why does the mass of a nucleus differ from the sum of its protons and neutrons?
Because the mass defect corresponds to the energy released when nucleons bind, reducing the total mass.
Because protons and neutrons lose particles during nucleus formation.
Because the nucleus gains extra mass from the strong nuclear force holding it together.
S
SteveO1
Technology and cars
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6
PHYSICS
Nuclear Physics
Nuclear Force
The nuclear force defies electric repulsion to forge the heart of matter
3 days ago
0
Why is the nuclear force essential for the stability of atomic nuclei despite the repulsive electric force between protons?
Because the nuclear force repels neutrons and protons, preventing them from coming too close.
Because the nuclear force only affects neutrons and has no impact on protons.
Because the nuclear force is a strong, short-range attraction that overcomes the electrostatic repulsion between protons within the nucleus.
J
Johnbarrow
John from Bartow
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PHYSICS
Nuclear Physics
Gamma Emission
Gamma rays pierce matter with unmatched energy, bridging atomic secrets and cosmic phenomena
3 days ago
0
Why does gamma emission occur without changing the atomic number or mass of the nucleus?
Because gamma emission involves the ejection of protons to reduce atomic number
Because gamma emission releases energy through photons without ejecting particles from the nucleus
Because gamma emission adds neutrons to the nucleus to stabilize it
B
Bonbo
Me as you
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PHYSICS
Nuclear Physics
Fission Bomb
The split-second chain reaction in a fission bomb releases energy equivalent to thousands of tons of TNT
3 days ago
0
What is the primary mechanism that allows a fission bomb to release such a massive amount of energy?
A chemical explosion triggered by conventional explosives
Energy released by nuclear fusion of light atoms like hydrogen
A self-sustaining chain reaction of nuclear fission splitting heavy atomic nuclei
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PeterPan
Interested in JM Barrie and other children’s writers
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PHYSICS
Nuclear Physics
Radioactive Decay
Atomic nuclei wage invisible wars to achieve stability through radioactive decay
4 days ago
0
Which fundamental force is primarily responsible for beta decay in radioactive nuclei?
The electromagnetic force
The weak nuclear force
The strong nuclear force
B
Bonbo
Me as you
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PHYSICS
Nuclear Physics
Iodine-131 Radioactive Decay
A fleeting isotope that transformed nuclear medicine and disaster response
5 days ago
0
Why is iodine-131 particularly significant in both nuclear accidents and medical treatments?
Because its eight-day half-life leads to intense but short-lived radiation that affects the thyroid, making it both a health hazard and a therapeutic tool.
Because it remains radioactive for decades, causing long-term contamination and treatment effects.
Because it is stable and does not emit radiation, making it safe for widespread use without precautions.
B
Bb115
Books and cars
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PHYSICS
Nuclear Physics
Neutron Radiation
Neutron radiation silently transforms matter by creating new radioactive elements deep within materials
7 days ago
0
Why is neutron radiation particularly effective at inducing radioactivity in materials compared to other forms of radiation?
Because neutrons have no electric charge, they penetrate deeply and interact with atomic nuclei to form new nuclides.
Because neutrons carry a strong positive charge that attracts electrons and causes ionization.
Because neutron radiation only affects the surface of materials and does not penetrate deeply.
F
FordMotor
Ford makes good cars for great people. This is the page for our new F1 team.
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SCIENCE
Nuclear Physics
Radioactive Fallout
0
Radioactive fallout's deadly reach is shaped by a clash of nuclear power and shifting winds
7 days ago
Radioactive fallout is not just a byproduct of nuclear explosions; it is a fierce battleground between nature's forces and human technology. When a nuclear explosion occurs, it creates a radioactive cloud filled with dangerous isotopes....
1
199
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PHYSICS
Nuclear Physics
Atomic Nuclei and Interactions
Atomic nuclei harbor forces so immense they power stars and reshape energy on Earth
9 days ago
0
What fundamental force primarily holds the atomic nucleus together despite the repulsion between protons?
The strong nuclear force
Electromagnetic force
Gravitational force
B
Bb115
Books and cars
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PHYSICS
Nuclear Physics
Neutron Flux
Neutron flux reveals the invisible currents powering nuclear reactions and shaping reactor safety
10 days ago
0
Why is controlling neutron flux critical in nuclear reactors?
Because it directly affects the rate of nuclear chain reactions and reactor stability
Because it determines the temperature of the reactor coolant
Because neutron flux measures the electrical output of the reactor
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FordMotor
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SCIENCE
Nuclear Physics
Megaton Bomb
The Tsar Bomba's blast was so powerful it shattered windows hundreds of miles away
11 days ago
0
What key process allows a megaton bomb to achieve its massive explosive yield compared to smaller nuclear weapons?
Simple chemical explosion with enhanced TNT
Nuclear fission alone without any fusion stage
Thermonuclear fusion triggered by an initial fission explosion
N
Nellieger
I am studying psychology
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PHYSICS
Nuclear Physics
Nuclear Fusion
Fusion's promise of star power on Earth remains tantalizingly out of reach
11 days ago
0
What is the primary challenge in harnessing nuclear fusion for energy on Earth?
Finding enough radioactive fuel to sustain the reaction
Preventing the fusion reaction from producing harmful greenhouse gases
Creating and sustaining the extreme temperatures and pressures needed for fusion reactions
B
Bb115
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PHYSICS
Nuclear Physics
Nuclear Fusion
The same reaction fueling stars could revolutionize Earth's energy future but remains elusive
14 days ago
0
What is the primary reason nuclear fusion releases energy during the reaction?
The fusion reaction creates new elements that inherently contain more energy.
Energy is released because the nuclei repel each other and release kinetic energy when they collide.
The mass of the resulting nucleus is less than the sum of the original nuclei, and the mass difference converts to energy.
F
FordMotor
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PHYSICS
Nuclear Physics
Fission Fragments
Fission fragments can be harnessed directly to propel spacecraft with unmatched efficiency
7 Feb 2026
0
What is the primary advantage of using fission fragments directly in rocket propulsion compared to traditional nuclear thermal rockets?
They provide higher specific impulse by using the kinetic energy of charged fission fragments directly.
They use chemical reactions to increase thrust efficiency.
They convert nuclear energy into heat to propel a working fluid more efficiently.
B
Bb115
Books and cars
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PHYSICS
Nuclear Physics
Nuclear Research
Nuclear research transformed tiny atomic cores into powerful energy sources and geopolitical forces
7 Feb 2026
0
How did early nuclear research influence global politics and energy development?
By enabling nuclear fission and fusion, it led to both energy production and nuclear weapons, affecting international relations.
It only contributed to medical imaging technologies without broader societal impact.
Nuclear research was primarily focused on creating new chemical elements rather than energy or weapons.
U
Underground
Underground music and art
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PHYSICS
Nuclear Physics
Alpha Particle
0
Alpha particles are helium nuclei that quickly become neutral helium atoms after emission
6 Feb 2026
Alpha particles are helium nuclei that quickly become neutral helium atoms after emission Many believe alpha particles are just simple bits of radiation, but they are actually the very nuclei of helium atoms, carrying profound...
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112112112John
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PHYSICS
Nuclear Physics
Atomic Nucleus
The atomic nucleus is a tiny powerhouse where forces battle to hold matter together
6 Feb 2026
0
What force primarily holds protons and neutrons together in the atomic nucleus despite the repulsive electric forces between protons?
Electrostatic force
Gravitational force
The nuclear force
B
Bb115
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PHYSICS
Nuclear Physics
Nuclear Reactor
Nuclear reactors harness controlled atomic fission to produce vast amounts of energy efficiently
4 Feb 2026
0
What role do neutron moderators play in a nuclear reactor?
They slow down neutrons to increase the probability of further fission reactions.
They absorb excess neutrons to stop the chain reaction completely.
They increase the speed of neutrons to enhance energy release.
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