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Physics and electronics
Work with motion, forces, energy and electric circuits.
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- Acceleration calculatorAverage acceleration = (final velocity − initial velocity) ÷ elapsed time.
- Angular acceleration calculatorAverage angular acceleration = (final angular velocity − initial angular velocity) ÷ elapsed time.
- Angular velocity calculatorAngular velocity is angular displacement divided by elapsed time.
- Average velocity calculatorAverage velocity = signed displacement ÷ elapsed time.
- Calculate rms voltageFor a zero-offset sine wave, RMS voltage = peak voltage ÷ √2.
- Capacitance to charge calculatorCharge = capacitance × voltage.
- Centripetal force calculatorCentripetal force = mass × speed² ÷ radius.
- Coefficient of friction calculatorCoefficient of friction = friction force ÷ normal force.
- Coulombs law charge calculatorCalculate the vacuum electrostatic force between point charges with F = q₁q₂/(4πε₀r²).
- Current calculatorCurrent = voltage ÷ resistance.
- Density calculatorDensity = mass ÷ volume.
- Elastic potential energy calculatorElastic energy = ½ × spring constant × displacement².
- Engine horsepower calculatorConvert shaft torque and rotational speed to power: watts = torque × rpm × 2π/60.
- Engine torque calculatorFind shaft torque from power and rotational speed: torque = watts ÷ angular speed.
- Force calculatorNet force = mass × acceleration.
- Frequency calculatorFrequency = cycle count ÷ time in seconds.
- Friction force calculatorFriction force magnitude = friction coefficient × normal force.
- Gravitational force calculatorCalculate Newtonian gravitational force F = Gm₁m₂/r² between two point masses or separated spherical bodies.
- Gravitational potential energy calculatorPotential energy change = mass × local gravitational acceleration × height change.
- Ideal gas law calculatorCalculate ideal-gas pressure with P = nRT/V using kelvin, cubic metres and moles.
- Kinetic energy calculatorKinetic energy = ½ × mass × speed².
- Mass calculatorMass = density × volume.
- Momentum calculatorMomentum = mass × velocity.
- Net force calculatorAdd planar force components, then find magnitude √(Fx² + Fy²) and direction atan2(Fy, Fx).
- Normal force calculatorNormal force on an incline = mass × gravitational acceleration × cos(incline angle).
- Parallel plate capacitance calculatorCalculate ideal parallel-plate capacitance C = permittivity × overlapping area ÷ separation.
- Parallel resistance calculatorFor ideal resistors in parallel, 1/R = 1/R₁ + 1/R₂ + …
- Peak voltage calculatorFor a zero-offset sine wave, peak voltage = RMS voltage × √2.
- Period to frequency calculatorFrequency in hertz = 1 ÷ period in seconds.
- Power factor calculatorCalculate power factor as real power in watts divided by apparent power in volt-amperes.
- Pressure calculatorPressure = normal force ÷ area.
- Projectile motion calculatorCalculate flight time, range and height for a projectile landing at its launch elevation.
- Resistance calculatorResistance = voltage magnitude ÷ current magnitude.
- Resistor capacitor circuit calculatorCalculate an RC time constant τ = RC and ideal capacitor charging and discharging voltages.
- Series and parallel capacitor calculatorCalculate total capacitance in parallel by addition and in series by reciprocal addition.
- Series resistance calculatorFor resistors in series, add the resistance values.
