Content Review Flashcards
SI units
second, meter, kilogram, ampere, kelvin, mole, candela
Phab phive equations
v = u +at
s = ut+ 1/2 at^2
v^2 =u^2+2as
s = (v+u)t/2
Position - Time graph
Velocity - Time graph
Acceleration - Time graph
slope = velocity area = nothing slope = acceleration area = displacement slope = nothing area = velocity
Newton law #1
an object continues in uniform motion in a straight line or at rest, unless a resultant external force acts upon it
Newton law #2
Force = mass x acceleration Force = rate of change of momentum
Newton law #3
If body A exerts a force on body B, body B will exert an equal but opposite force on body A
Translational Equilibrium
Net force = 0
Friction: static vs dynamic
Static (stationary- requires more force due to the law of inertia) F < = Us R (Friction force is less than or equal to Friction coefficient x normal force)
Dynamic (kinetic- requires less energy) F = UdR
Terminal velocity
a = 0. Drag force = force of gravity
Newton SI units
Kg x m / s^2
c to k
c to f
Kelvin = Celsius + 273.15 c = (f -32) 5/9
ohms law
v = IR
(Circuit ) Power formulas (watt)
P=IV
P= I^2R
P=V^2/R
(circuit) Power dissipation
P=IV
kirchoffs law
the total current that flows in, must equal total current that flows out
(waves) velocity equation
v = wavelength x frequecy
simple harmonic motion
Describe:
wavelength
period
frequency
a =-kx
magnitude of force (therefore acceleration) is proportional to displacement
direction of body travels back to fixed point/equilibrium
wavelength: distance between 2 equal points on a wave
period: time it takes to complete 1 cycle
frequency: Number of cycles per second
compression and rarefractions
Regions on a longitudional wave. Compression= area with high pressure due to compression of particles
rarefractions = opposite
Intensity of a wave
I = power/surface area
= power/4pie r^2
longitudonal vs transverse
longitudonal = particles vibrate parallel to direction of wave
transvere = movve perpendicular
