Tools

Interactive calculators and estimators that show their formulas.

4 pages

Half Life Formula: Which of Three Forms Fits Your Question

Learn which half life formula fits your question: halving for times, a logarithm for activity readings, or A = λN for two samples, with worked examples.

Oct 29, 2026

De Broglie Wavelength Formula: Pick the Right Form Fast

Learn which de Broglie wavelength form fits speed, kinetic energy or voltage, with worked electron examples, the 12.27/√V shortcut and its limits.

Oct 28, 2026 · 10 min read

Official CAP Data Makes an MHT-CET College Predictor Safer

Compare your percentile and State General Merit Number with an official CAP cutoff, then build a source-labelled MHT-CET preference list.

Sep 14, 2026 · 1 min read

Raw Marks Cannot Yield an Official MHT-CET Percentile

Use State CET Cell 2026 marking rules to total raw marks, see why session data controls percentile, then choose a Physics study next step.

Sep 8, 2026 · 1 min read