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50 Cards in this Set
 Front
 Back
Ohm's Law

V=IR


Voltage for a paralell circuit

Vt=V1=V2


Voltage for a series circuit

Vt=V1+V2+Vn...


Resistance in a parallel circuit

1/Rt=1/R1+1/R2


Resistance in a series circuit

Rt=R1+R2


Current in a series circuit

It=I1=I2


Potential Difference

V=W/Q
work/unit charge 

Electric Field

E=F/Q
force/unit charge 

Coulomb's law

F=KQ1Q2/rsquared


Index of refraction

n=sintheta1/sintheta2


Focal length of a spherical mirror

F=R/2


Huygen's Principle

each pt. on a wave front may be regarded as a new source of disturbance


Telescope magnification

m=fo/fe


Magnification

m=id/od


Lens equation

1/id+1/od=1/f


Snell's Law

n1sintheta1=n2sintheta2


Liquid Pressure

p=hdg


Solid Expands

∆L=Lc∆T


Work eq. for a spring

W=1/2Kxsquared


Hooke's Law

F=Kx


Momentum

P=mv


Power

P=W/t=Fd/t


Coefficient of Friction sliding

mew=Ff/N


Kinetic Energy

Ke=1/2mvsquared


Potential Energy

Pe=mgh


Work

W=Fd
force times distance moved 

Newton's Law of Gravitation

F=Gm1m2/rsquared


Average Velocity

V=(Vi+Vf)/2


Final Velocity

Vf=Vi+at
Vf=(visquared+2as)to the 1/2 

Distance

S=vi+1/2atsquared


Distance @ constant v

S=Vit


Velocity @ constant a

Vf=Vi+at


Acceleration

a=(V2V1)/(t2t1)


Newton's Law of Gravitation
(in words) 
2 bj. attract eachother w/ a force that is portional to the product of their masses and INVERSELY proprtional to the square of the distance between them


Center of Gravity

A point in or on the obj. where all the weight is concentrated. If supported only @ this point the obj. will balance


Centripetal force

inward force that must be applied to keep a body moving in a circle


Centripetal Acceleration

a=vsquared/r


Archimede's principle

loss in weight of an obj. immersed in a fluid equal the weight of fluid displaced


Bernoulli's Principle

greater the velocity of a fluid the smaller the pressure


Transverse wave

vibrations are @ right angles to direction of propogation
electromagnetic waves 

Longitudinal wave

vibrationjs parallel to direction of propogation
sound waves 

Doppler effect

when there is relative motion btwn a sourceof a wave and an observer, the frequency of vibrations received by the observer increases if the source and observer approach one another and decreses when they seperate


Law of reflection

when a wave is reflected the angle o fincidence equals the angle of reflection


Focal length

f=R/2


Refraction

bending of a wave on going into a second medium


Critical angle

limiting angle of incidence in the optically denser medium that results in an angle of refraction of ˚90


Polarized light

light whose direction of vibration has been restricted into one plan of vibration


Virtual image

image formed by the eye and brain which cannot be projected on a screen


Magnetic Field

region where a megnetic influence can be detected as a force on a magnet


Electromegnetic Strength

1)# of trns in the coils of a solenoid
2)nature of the core 3)current through the core 