Science & Education

C = k_H·P in three modes with preset 25 °C Henry constants, molar-mass mass readout and atm/kPa/torr pressure.

Development

Test java.util.regex patterns online: (?<name>…) named groups, possessive quantifiers and atomic groups, Pattern flags, ASCII vs UNICODE_CHARACTER_CLASS \d semantics, and ready-to-paste Java code.

Science & Education

Ksp ↔ molar solubility in either direction for 1:1, 1:2, 1:3 and 2:3 salts, with optional g/L output.

Media

Compare kick and bass timing/phase in the low band, report the offset and polarity, and export the corrected track with sample-accurate alignment.

Media

Match your mix's tonal balance and loudness to a reference track and export the corrected master, with a before/after third-octave band report.

Media

Simulate your mix on phone, laptop, earbud, car, club, mono and noisy-street playback, export every render in a ZIP, and report what survives each system.

Science & Education

E⁰cell = E⁰cathode − E⁰anode with ΔG⁰, the spontaneity verdict, and log₁₀K at 25 °C.

Science & Education

Hall voltage V_H = I·B/(n·q·t) with signed carrier charge, density in m⁻³ or cm⁻³, the Hall coefficient R_H, and sensitivity in V/T.

Science & Education

F = B·I·L·sinθ for a current-carrying wire, with unit selectors, the force magnitude, the 90° reference, and the right-hand-rule direction.

Science & Education

C = εᵣ·ε₀·A/d with area or square-side input, dielectric permittivity, and auto-scaled output from fF to µF.

Science & Education

Coulomb's law F = k·|q₁q₂|/r² with signed charges and unit selectors, reporting the force magnitude and whether the pair attracts or repels.

Science & Education

Solve control-system signal flow graphs with Mason's gain formula: forward paths, loops, non-touching combinations, Δ/Δk determinants and the exact transfer function.