PHYSICS
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77 terms
Terms | Definitions |
|---|---|
 Velocity | x/t |
| Acceleration | v/t |
| distance | vt + (1/2)at^2 |
| V^2 - (Va)^2 | 2ad |
| angular momentum | velocity/radius |
| Hooke's law | f = -kx |
| Work | F*d |
| Kinetic Energy | (1/2)mv^2 |
| E | mc^2 |
| efficiency | (output)/(input) |
| Force | (mv)/t |
| Torque | Force*perpendicular distance OR (mvr)/t |
| angular momentum (L) | mvr |
| Kepler's law | all planet orbit the sun in elliptical paths, a planet sweeps out an equal area of space in an equal amount of time in its orbit and the ratio of the cube of a planet's mean distance from the sun and the square of its period is constant |
| (R^3)/(T^2) | Ks=3.35*10^18 |
| gravitational acceleration | (4Rpi^2)/(T^2) |
| gravitational force | (GM1M2)/R^2 |
| Potential Energy | mgh or (-GMoMe)/(Re) |
| escape velocity | square root of (2GMe/Re) |
| orbit velocity | square root of (GMe/Re) |
| elastic PE | (1/2)kx^2 |
| Charle's Law | (V1/V2)=(T1/T2) |
| Boyle's Law | P1V1=P2V2 |
| SI unit for pressure | 1 Pascal = 1 N/m^2 |
| heat lost/gained | massspecific heattemperature change + massHf + massHv |
| 1 calorie | 4.184 Joule |
| water density | 10^3 kg/ m^3 |
| specific heat | 4.19kJ/kg*C |
| heat of fusion | 335 kJ/ kg |
| heat of vaporization | 2260 kJ/kg |
| (heat flow) (Q) | (internal energy)(U) + (work)(W) |
| T (period, spring) | 2pi (square root) (m/k) |
| T (pendulum) | 2pi(square root)(L/g) |
| Period | inverse of frequency |
| Velocity (wave) | frequency*wavelength |
| Doppler, torward observer | f=fo*[V/(V - Vs)] |
| Doppler away observer | f = fo*[V/(V+Vs)] |
| focal length | (Radius of Curvature)/2 |
| 1/focal length | 1/distance of object + 1/distance of image |
| Ho/Hi | Di/Do = magnification |
| illumination | intensity/d^2 |
| denser medium.. light travels... | slower |
| rarer medium... light travels | FAST |
| refraction | bending of a wave on going to a second medium |
| primary colors | red, green and blue |
| wavelength/ distance | distance between marks on screen / distance screen is away |
| diffraction | small slit, spread out light |
| polarization | polarized light is light whose direction of vibration has been restricted in some way |
| coherent | waves phase match |
| dispersive | spread out |
| resonant | input = coherent energy level |
| F (charges) | kQ1Q2/(r^2) |
| Electric field | Voltage/distance or Force/q |
| k (electricity) | 8.99*10^9Nm^2/C^2 |
| Voltage | Work/q |
| Resistance | pL/A |
| Conductivity | recipproval of resistivity, the resistivity of good conductors is low which means conductivity is high |
| Ohm's law | V = IR |
| Terminal Voltage | Emf - Ir |
| Power | IV or I^2 * R or (V^2)/R |
| Force (magnetic field) | qvB or ILB |
| Emf | LVB |
| PE capacitor | (1/2)CV^2 |
| Series Resistors | R = R1 + R2 |
| Ek | hf - o |
| Parallel Resistors | (1/R) = (1/R1) + (1/R2) |
| Series Capacitors | (1/C) = (1/C1) + (1/C2) |
| Parallel Capacitors | C = C1 + C2 |
| h (planck's constant) | 6.6310^-34 Js |
| momentum of photon | (planck's constant)/wavelength |
| Alpha Decay | loss of a helium nucleus |
| Beta Decay | electron or positron is emitted |
| Gamma Radiation | electromagnetic radiation of high energy |
| relative L | Lo* (square root of)(1-(v^2)/(c^2)) |
| relative time | to/(square root of)(1-(v^2)/(c^2)) |
| relative mass | mo/(square root of)(1-(v^2)/(c^2)) |
| de Broglie Wavelength | wavelength = (planck's constant)/ momentum |
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