100 results for “law”
Multiplying powers with the same base adds the exponents.
Raising a power to a power multiplies the exponents.
Dividing powers with the same base subtracts exponents.
Any nonzero number to the power zero equals one.
A negative exponent means reciprocal.
Relates sides to opposite angles in any triangle.
Generalizes Pythagoras to any triangle.
Relates sides of any triangle to the sines of opposite angles.
Generalises Pythagoras to any triangle.
Relates two sides and their opposite angles.
Force equals mass times acceleration.
Voltage equals current times resistance.
Electrostatic force between two charges.
Refraction of light between two media.
Restoring force of a spring.
Restoring force of a spring proportional to displacement.
An object stays at rest or in uniform motion unless acted on by a net force.
Net force equals mass times acceleration (rate of change of momentum).
For every action there is an equal and opposite reaction.
Total momentum of an isolated system stays constant.
Energy cannot be created or destroyed, only transformed.
Buoyant force equals the weight of fluid displaced.
Pressure applied to a confined fluid transmits equally in all directions.
Faster-moving fluid has lower pressure (energy conservation in flow).
The restoring force of a spring is proportional to its extension.
Every mass attracts every other mass.
Planets orbit the Sun in ellipses with the Sun at one focus.
A line from a planet to the Sun sweeps equal areas in equal times.
The square of the orbital period is proportional to the cube of the semi-major axis.
Two systems in thermal equilibrium with a third are in equilibrium with each other.
Energy conservation: change in internal energy equals heat added minus work done.
The entropy of an isolated system never decreases.
At constant temperature, pressure and volume of a gas are inversely proportional.
At constant pressure, volume of a gas is proportional to absolute temperature.
At constant volume, pressure of a gas is proportional to absolute temperature.
Total energy radiated by a black body scales with the fourth power of temperature.
Voltage across a resistor equals current times resistance.
Electrostatic force between two point charges.
Electric flux through a closed surface is proportional to the enclosed charge.
A changing magnetic flux induces an electromotive force.
Induced current opposes the change in flux that produced it.
A magnetic field circulates around an electric current.
Current into a junction equals current out of it (charge conservation).
The sum of voltages around any closed loop is zero.
Relates focal length to object and image distances for a thin lens.
Light bends when passing between media of different refractive index.
Mass and energy are equivalent and interconvertible.
The energy of a photon is proportional to its frequency.
Position and momentum cannot both be known with unlimited precision.
An object stays at rest or in uniform motion unless acted upon.
Every action has an equal and opposite reaction.
Total momentum is conserved without external forces.
Total electric charge in an isolated system is conserved.
Change in internal energy equals heat added minus work done.
Total entropy of an isolated system never decreases.
Elastic restoring force is proportional to displacement.
A changing magnetic flux induces an EMF.
Induced currents oppose the change producing them.
Buoyant force equals the weight of displaced fluid.
Pressure applied to a confined fluid transmits undiminished.
Relates pressure, volume, moles and temperature.
Pressure and volume are inversely related at constant T.
Volume is proportional to temperature at constant P.
Pressure is proportional to temperature at constant V.
Combines Boyle, Charles and Gay-Lussac.
Energy conservation for a thermodynamic system.
Reversible entropy change at temperature T.
Intensity of polarised light through a polariser.
Force between two point charges.
Electric flux through a closed surface.
Induced EMF from changing magnetic flux.
Laminar flow rate through a pipe.
Speed of fluid leaving a hole at depth h.
Peak emission wavelength of a hot body.
Voltages around any closed loop sum to zero.
Current into a node equals current out.
Relates pressure, volume, moles and temperature of a gas.
Reaction rate as a function of reactant concentrations.
Absorbance of light by a solution.
Relates two states of a fixed amount of gas.
Pressure and volume are inversely related at constant temperature.
Volume is proportional to temperature at constant pressure.
Relates pressure, volume, moles, and temperature of a gas.
At constant temperature, pressure and volume are inversely related.
At constant pressure, volume is proportional to temperature.
At constant volume, pressure is proportional to temperature.
Combines Boyle, Charles, and Gay-Lussac laws.
Total enthalpy change is the sum of step changes.
Metabolic rate scales with body mass to the ¾ power.
Relates orbital period to semi-major axis.
Recession velocity of galaxies with distance.
Luminosity of a star from radius and temperature.
Peak emission wavelength of a blackbody.
The attractive force between any two masses.
Rate of groundwater flow through porous rock.
Maximum speedup from parallelizing a fraction of a task.