Energy And Matter Flashcards
What is energy also known as?
Photons
What is mass also known as?
Particles with mass
What’s the link between matter and energy?
They are both interchangeable,
-matter can turn into energy,
-energy can turn into matter.
What’s the particle responsible for allowing the energy and matter to be interchangeable?
Particles can turn into photons, photons can turn into particles.
Due to anti-matter.
What is annihilation?
This is when matter turns into energy.
Describe the process of annihilation?
A particle and its corresponding anti particle collide and the mass dispersed and turns into energy. Two photons are released
What’s the equation that links to annihilation?
Energy of photons = Rest E & Kinetic E
2(hf) = 2mc^2 + 2(0.5mv^2)
What is pair production?
Energy is turned into mass
Describe the process of pair production?
One photon turns into two particles, a particle and its corresponding anti-particle.
What is the equation that links to pair production?
hf = 2mc^2 + 2(0.5mv^2)
What is the equation when asked for the ‘minimum energy required in pair production?
-Remove the kinetic energy
hf = 2mc^2
What is rest energy?
It is the energy that a particle has for its mass,
Its mass energy
How do you calculate rest energy?
E = mc^2
