Physics A2

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  • Created by: Florence
  • Created on: 02-01-13 14:59
What is meant by a uniform electric field?
A region between two objects of different electric potential in which a charged particle will feel a force and the strength of the force is the same at any point in the field. Field lines are equispaced.
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What is a magnetic field?
Region where a force is exerted on magnetic material, Field lines go from north south (direction a north pole would feel a force in the field).
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What is capacitance?
The amount of charge stored per volt within a capacitor.
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Why is it difficult to contain anti-hydrogen atoms compared with anti- protons?
Atoms are not charged- magnetic/ electric fields have no effect.
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Why has so little anti matter been created?
Needs a large amount of energy to produce anti matter.
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What happens to a capacitor when a switch is closed completing a circuit with it, a resistor and a cell?
The capacitor charges up gathering negative charges on one plate, repelling the negative charges on the othe plate giving that plate a positive charge. This happens over a period of time. Eventually all charges are stored in capacitor.
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Why do two parallel wires carrying a current in the same direction attract each other?
I in a wire produces a mag field. Mag field is around the wire. Each wire is in the mag field of the other wire. Current carrying wire in mag field experiances a force. Flemming's left hand rule suggests that the force cause moti bringing them togeth
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How do neutral particles appear in an image taken from a bubble chamber?
No tracks, ot visible at all until it decays (decays into charged particles).
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What is meant by an elastic collision?
A collision in which bot momentum and kinetic energy is conserved.
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What is meant by an inelastic collision?
A collision in which momentum is conserved but kinetic energy is not.
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What is the law of conservation of charge?
Electric charge cannot be created or destroyed ( though positive and negative charges can make each other neutral.
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What is an atomic mass number, A?
A is the number of nucleons in the nucleus of an atom.
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What is a Nucleon?
Protons and neutrons are classified as nucleons. They have similar masses.
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Other cards in this set

Card 2

Front

What is a magnetic field?

Back

Region where a force is exerted on magnetic material, Field lines go from north south (direction a north pole would feel a force in the field).

Card 3

Front

What is capacitance?

Back

Preview of the front of card 3

Card 4

Front

Why is it difficult to contain anti-hydrogen atoms compared with anti- protons?

Back

Preview of the front of card 4

Card 5

Front

Why has so little anti matter been created?

Back

Preview of the front of card 5
View more cards

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