Flashcards › Science › Physics
Physics Laws and Formulas
Important physics formulas and what they mean.
0 of 55 known
55 cards
- Newton's first lawLaw / quantityAn object stays at rest or in steady motion unless acted on by a net force
- Newton's second lawLaw / quantityF = m x a
- Newton's third lawLaw / quantityFor every action there is an equal and opposite reaction
- SpeedLaw / quantityspeed = distance / time
- AccelerationLaw / quantitya = (final velocity - initial velocity) / time
- WeightLaw / quantityW = m x g
- MomentumLaw / quantityp = m x v
- WorkLaw / quantityW = F x d
- PowerLaw / quantityP = W / t
- Kinetic energyLaw / quantityKE = 1/2 m v squared
- Gravitational potential energyLaw / quantityPE = m x g x h
- DensityLaw / quantitydensity = mass / volume
- PressureLaw / quantityP = F / A
- Ohm's lawLaw / quantityV = I x R
- Electric powerLaw / quantityP = I x V
- Wave speedLaw / quantityv = f x wavelength
- Frequency and periodLaw / quantityf = 1 / T
- Universal gravitationLaw / quantityF = G m1 m2 / r squared
- Einstein's mass-energy equivalenceLaw / quantityE = m c squared
- Law of conservation of energyLaw / quantityEnergy cannot be created or destroyed, only changed in form
- Law of conservation of momentumLaw / quantityTotal momentum stays the same in a closed system
- Hooke's lawLaw / quantityThe force of a spring is proportional to how far it is stretched: F = kx
- Archimedes' principleLaw / quantityThe buoyant force equals the weight of the fluid displaced
- Pascal's principleLaw / quantityPressure applied to a confined fluid is passed on equally
- Bernoulli's principleLaw / quantityFaster-moving fluid has lower pressure
- Boyle's lawLaw / quantityAt constant temperature, gas pressure goes down as volume goes up
- Charles's lawLaw / quantityAt constant pressure, gas volume goes up as temperature goes up
- Snell's lawLaw / quantityDescribes how light bends when it passes between materials
- Law of reflectionLaw / quantityThe angle of incidence equals the angle of reflection
- Coulomb's lawLaw / quantityElectric force depends on charges and on distance squared
- First law of thermodynamicsLaw / quantityEnergy is conserved; heat and work change internal energy
- Second law of thermodynamicsLaw / quantityHeat flows from hot to cold, and entropy tends to increase
- Third law of thermodynamicsLaw / quantityA system cannot be cooled to absolute zero in a finite number of steps
- Kepler's first lawLaw / quantityPlanets orbit in ellipses with the Sun at one focus
- Kepler's second lawLaw / quantityA planet sweeps out equal areas in equal times
- Kepler's third lawLaw / quantityA planet's orbital period squared is proportional to its distance cubed
- Centripetal accelerationLaw / quantitya = v squared / r
- Average velocityLaw / quantity(final position - starting position) / time
- Distance at constant acceleration from restLaw / quantityd = 1/2 a t squared
- Final speed from restLaw / quantityv = a x t
- Series circuit resistanceLaw / quantityTotal R = R1 + R2 + R3
- Parallel circuit resistanceLaw / quantity1/R total = 1/R1 + 1/R2 + ...
- Kinetic energy depends on speed how?Law / quantityOn the square of speed, so doubling speed quadruples KE
- Mechanical advantageLaw / quantityOutput force divided by input force
- EfficiencyLaw / quantity(useful output / total input) x 100 percent
- Heat energyLaw / quantityQ = m c (change in temperature)
- Specific heat capacityLaw / quantityHeat needed to raise 1 kg of a substance by 1 degree
- Ideal gas lawLaw / quantityPV = nRT
- Doppler effectLaw / quantityThe pitch or color of a wave changes when the source or observer moves
- Heisenberg uncertainty principleLaw / quantityYou cannot know a particle's exact position and momentum at once
- Photon energyLaw / quantityE = h x f (Planck's constant times frequency)
- TorqueLaw / quantityTorque = force x distance from the pivot
- Impulse-momentumLaw / quantityForce x time = change in momentum
- Escape velocityLaw / quantityThe speed needed to break free of a planet's gravity
- Universal gravitational constantLaw / quantityG, about 6.67 x 10^-11 N m2/kg2
Download this deck
- CSVExcel, Google Sheets, Numbers
- Anki / Quizlet (tab-separated)Import straight into Anki or Quizlet
- JSONFor programmers and apps
- Plain textOne card a line, “front : back”, ready for Peabody's flashcard maker to print
Want paper cards? Paste the plain-text download into the flashcard maker.