AS PHYSICS DEFINITIONS
acceleration
accuracy
antinode
centre of gravity of a body
coherence
conditions for equilibrium
Conditions for superposition
conditions required for formation of a
stationary wave
coulomb
diffracted waves
diffraction of a wave
displacement
Doppler effect
elastic potential energy
electric current
electric field
electric field strength
electric potential difference
electromotive force (e.m.f.)
field line (line of force) in an electric field
force
frequency
gravitational potential energy
Hooke's Law
O/A LEVEL PHYSICS
AND MATHEMATICS
rate of change in velocity
how close the experimental value is to the
true value
maximum amplitude
the point where all the weight of the body
is seemed to act
constant phase difference between waves
sum of clockwise moments = sum of
anticlockwise moments and sum of all
forces in x and y direction is equal to zero
Waves must be of the same type, waves
must be coherent, waves must meet at a
common point
two waves having the same frequency,
wavelength and speed moving in opposite
directions overlap
ampere second
waves spread at each slit/gap
when a wave passes through a slit, it
spreads into a geometrical shadow
distance in a specified direction
change in apparent frequency of the wave
when the source is moving towards or away
from the observer
energy stored in a body due to its
compression/extension
flow of charge carriers
region of space where a force acts on a
charge
force per unit positive charge
work done OR energy transferred from
electrical to other forms / charge
energy transferred from chemical to
electric energy per unit charge
direction in which a free positive charge
will move
rate of change of momentum
number of oscillations per unit time
energy stored in a mass due to its position
in a gravitational field
extension of a spring is directly
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Intensity
interference
kinetic energy
Kirchhoff's first law
Kirchhoff's second law
Law of conservation of energy
linear momentum
longitudinal wave
mass
moment of a force
Moment of a couple
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
node
ohm
period
power
precision
pressure
principle of conservation of momentum
principle of moments
principle of superposition
O/A LEVEL PHYSICS
AND MATHEMATICS
proportional to the force applied to it,
provided that the limit of proportionality
has not been reached
Power per unit area
sum of displacements of waves when they
meet
energy stored in a body due to its motion
the sum of current flowing into a junction =
sum of current flowing out of a junction
(charge)
sum of e.m.f. = sum of p.d. around a closed
circuit (energy)
Energy can neither be created nor
destroyed, it can only be transformed from
one form to another
mass x velocity
direction of propagation of energy is
parallel to the direction of wave travel
quantity of matter in a body
force x perpendicular distance between
the pivot and the line of force
Two equal, anti-parallel forces acting at
different parts produces a rotation
an object stays at rest or at constant speed
unless an external force acts on it
force is proportional to rate of change in
momentum
force on body A is equal in magnitude and
opposite in direction to the force on body B
zero amplitude
volt/ampere
time taken for one complete oscillation
work done per unit time
the difference in the experimental values
(range)
force per unit area
total momentum is constant, sum of
momentum before = sum of momentum
after in an isolated system
for a body in equilibrium, the sum of
clockwise moments is equal to the sum of
anticlockwise moments
when two or more waves meet at a point,
resultant displacement is the sum of the
individual displacements
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quantised
resistance
scalar
spontaneous
strain
stress
transverse wave
upthrust
vector
velocity
Viscous drag
volt
wavelength
work done
young modulus
O/A LEVEL PHYSICS
AND MATHEMATICS
charge only exists in discrete amounts
voltage per unit current
a quantity with a unit and magnitude
rate of decay is not affected by external
factors
extension / original length
force per unit area
vibrations are perpendicular to the
direction of propagation of energy
Upward force caused by the pressure
difference between top and bottom
surfaces (always directed upwards)
a quantity with unit, magnitude and
direction
change in displacement per unit time
Resistance experienced by the object when
it moves in the liquid (opposite to direction
of motion)
joule per coloumb
distance between two successive in phase
points OR minimum distance b/w two
wavefronts
force x distance moved in the direction of
the force
stress/strain
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