Physics unit 4 revsion cards

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  • Created by: emma
  • Created on: 21-05-13 16:29
how does a d.c eletric motor work?
current causes upward force on one side of coil and downward dorce on the other side. state direction that coil will rotate. commutator switches current direction.
1 of 5
why are electrons of small wavelength used to investigate nuclear structure?
wave length needs to be smaller than nuclei.
2 of 5
why is the p.d used in a cyclotron alternating?
protons are accelerated between the dees every half rotation.
3 of 5
Investigating conservation of momentum with Newton's cradle?
measure velocity on impact using light gates/data logger etc. mention mv and determine wether momentum is conserved.
4 of 5
what happens after collision in Newton's cradle?
Ke --> sound/ internal energy/ Ke of middle balls. Balls stop when all energy is transferred to these forms.
5 of 5

Other cards in this set

Card 2

Front

why are electrons of small wavelength used to investigate nuclear structure?

Back

wave length needs to be smaller than nuclei.

Card 3

Front

why is the p.d used in a cyclotron alternating?

Back

Preview of the front of card 3

Card 4

Front

Investigating conservation of momentum with Newton's cradle?

Back

Preview of the front of card 4

Card 5

Front

what happens after collision in Newton's cradle?

Back

Preview of the front of card 5

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