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### 50 Cards in this Set

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 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=(V2-V1)/(t2-t1) 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