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Physics

Calculate motion, forces, heat, sound and light. Every model identifies its quantities, units and limits.

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13 calculators

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13 calculators available.

PhysicsDecibel ratio calculatorConvert a power or amplitude ratio into a level difference and see which logarithm rule applies.

PhysicsSound level and distance calculatorEstimate how the sound pressure level from a point source changes with distance.

PhysicsDistance from sound travel timeCalculate distance from the delay between lightning and thunder, or from the travel time of an echo.

PhysicsSimple pendulum period calculatorCalculate the period and frequency of an ideal simple pendulum at a small displacement.

PhysicsSpring oscillator: frequency and energyFind the period, frequency, energy and maximum speed of an ideal spring–mass oscillator.

PhysicsHydrostatic pressure calculatorFind the gauge pressure in a stationary liquid and add the ambient pressure to obtain absolute pressure.

PhysicsBuoyancy and submerged volumeCompare buoyant force with the weight of a closed body and estimate the submerged fraction when it floats.

PhysicsReynolds number for a circular pipeCalculate the dimensionless Reynolds number from density, mean speed, pipe diameter and dynamic viscosity.

PhysicsLinear thermal expansion calculatorCalculate the change in length of a freely expanding component after a temperature change.

PhysicsHeat conduction through a flat layerEstimate steady heat flow through a single homogeneous layer of material.

PhysicsTorque, rotational speed and powerCalculate the mechanical power of a rotating shaft from its torque and rotational speed.

PhysicsGear ratio and torque calculatorCalculate the ratio of two gears, together with the ideal output speed and torque.

PhysicsHeat energy from mass and temperature changeCalculate the heat energy needed for a temperature change at constant specific heat capacity.