Physics unit 4

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  • Created by: laura
  • Created on: 22-05-13 11:56
Electric field strength
Force per unit positive charge
1 of 15
Potential gradient
=Electric field strength=V/D
2 of 15
Magnetic flux density
Force per unit Current x Length x Sin(theta)
3 of 15
Tesla
One tesla is the magnetic flux density when a wire of 1 metre has a current of 1 amp perpendicular to the field
4 of 15
Magnetic Flux
product of magnetic flux density and area at right angles to the flux
5 of 15
Faraday's law
the magnitude of the induced e.m.f is equal to the rate of magnetic flux
6 of 15
Lenz's law
the direction of any induced current is in a direction that opposes the flux change that causes it
7 of 15
Nucleon
nuclear particle, either a proton or a neutron
8 of 15
Activity
the rate at which a source emits radioactive particles
9 of 15
Half-life
time taken for a radioactive sources activity to decrease by half
10 of 15
Binding energy
energy required to seperate an atom into it's constituent parts
11 of 15
Intensity
Power per unit cross-sectional area
12 of 15
Acoustic Impedance
Z=pc
13 of 15
Hubble's law
the speed of recession of a galaxy is directly proportional to its distance from the earth
14 of 15
Cosmological principle
the universe is isotropic and homogeneuos
15 of 15

Other cards in this set

Card 2

Front

=Electric field strength=V/D

Back

Potential gradient

Card 3

Front

Force per unit Current x Length x Sin(theta)

Back

Preview of the back of card 3

Card 4

Front

One tesla is the magnetic flux density when a wire of 1 metre has a current of 1 amp perpendicular to the field

Back

Preview of the back of card 4

Card 5

Front

product of magnetic flux density and area at right angles to the flux

Back

Preview of the back of card 5
View more cards

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