P3 Topic 4

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What is centripetal force
A force that keeps something moving in a circle
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How does a magnetic field affect a charged particle
It makes it move in a circular path because a force is constantly acting in the same perpendicular direction
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What is a cyclotron
A particle accelerator
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How does a cyclotron work
Two D's are connected to an alternating current and a charged particle is attracted to either D whilst a magnetic force keeps it moving in a circle
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Why do we use particle accelerators
To create radioactive isotopes for PET scanners and to find put how the universe was created
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What is the Large Hadron collider
A particle accelerator that tries to recreate conditions similar to just after the big bang by colliding protons at very high speeds
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What is an elastic collision
Where momentum and kinetic energy are conserved
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What is an inelastic collison
Where only momentum is conserved ad some kinetic energy is lost to heat and sound
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What is the equation for momentum
mass x velocity
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What is annihilation
Where two anti matter collide and have a momentum of zero because they are the same mass and travelling at the same velocity then collide to produce two gamma rays with a momentum of 0
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What is annihilation used in
Detecting tumors in PET scanners
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What is triangulation
Where the pairs of gamma rays are detected by the computer in a PET scanner and the tumor is along that path
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Other cards in this set

Card 2

Front

How does a magnetic field affect a charged particle

Back

It makes it move in a circular path because a force is constantly acting in the same perpendicular direction

Card 3

Front

What is a cyclotron

Back

Preview of the front of card 3

Card 4

Front

How does a cyclotron work

Back

Preview of the front of card 4

Card 5

Front

Why do we use particle accelerators

Back

Preview of the front of card 5
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