640307
Description
Mind Map by oliverwhitehead16, updated more than 1 year ago
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Created by oliverwhitehead16
about 11 years ago
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P5: Physics
- Definitions:
- gravitational field strength: 10N
- centrapetal force:
a force that keeps
something in
circular motion
- weight:
Force of
gravity on an
object
- mass:
the fixed
number
of
particles
in an
object
- vector has size
and direction,
scalar just has
size
- interference
- 2 crests or
troughs meet,
sound gets louder.
Constructive
interference
- when a crest and
trough meet they
cancel each
other out.
Destructive
interference
- 2 crests or
troughs meet,
sound gets louder.
Constructive
interference
- gravitational field strength: 10N
- Equations
- Equations of
motion:
1.V=U+AT
2.S= V+U/2 T
3.S=UT+0.5AT
4.V2=U2+2AS
SUVAT
- SOH CAH TOA
- Adding velocity=
Va+Vb= final velocity
- magnification=
image size/object
size
- refractive index=
speed of light in a
vacuum/speed of light
in a medium
- force= change in
momentum/time
taken
- Momentum=
mass x velocity
- average speed=
total distance/total
time taken
- weight=mass
x gravitational
field
- Equations of
motion:
1.V=U+AT
2.S= V+U/2 T
3.S=UT+0.5AT
4.V2=U2+2AS
SUVAT
- Satelities
- natural: moon
- artificial: satalitie
- low polar orbit:
travel quickly
- weather forecasting
- imaging of earth's surface
- military (spying)
- weather forecasting
- geostationary orbit:
takes 24 hours to
complete orbit, have a
fixed position on
earth,orbit high
- communication, T.V
- weather forecasting
- communication, T.V
- comets: elliptical orbit
- speeds up when closer
to the sun
- slows down further
away from the sun
- speeds up when closer
to the sun
- natural: moon
- Projectiles
- travel in a curved path due to gravity
- trajectory, parabolic
- travel in a curved path due to gravity
- Newton's 3 law:
"every action has an
equal and opposite
reaction"
- bullet fired out from
gun, recoil produced
is the same size
force as the force on
the bullet
- bullet fired out from
gun, recoil produced
is the same size
force as the force on
the bullet
- Waves
- refraction: light in a medium
- dispersion
- violet get refracted
the most due to the
waves being long
- red gets
refracted the
least due to the
waves being the
shortest
- violet get refracted
the most due to the
waves being long
- polarisation
- the film has crystals
that are ordered into
straight lines, only
allowing one plane of
light through
- the film has crystals
that are ordered into
straight lines, only
allowing one plane of
light through
- path difference
- N: gives
constructive
interference
- (N+0.5):
gives
destructive
- N: gives
constructive
interference
- theories of light
- Einstien believed light was
made of photons and they
had no mass, behaved like
particles and waves
- Huygen believed in
wave theory where
light moved in waves
- newton: believed in
the particle theory and
called them
corpuscles
- Einstien believed light was
made of photons and they
had no mass, behaved like
particles and waves
- diffraction, reflection
- refraction: light in a medium
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