Dr. Helena Ortiz
Featured contributor PhD Applied Physics; former research associate at a national metrology lab.

Dr. Helena Ortiz

Senior Reviewer, Science & Engineering

0 calculators 0 articles Member since Jun 2026
Physics / Electricity

Capacitor Energy Calculator

Compute the energy stored in a capacitor from its capacitance and the voltage across it, using E = ½ · C · V². Reports s...

basic
10,777 4.3 1 min
Physics / Mechanics

Terminal Velocity Calculator

Compute the terminal velocity of a falling object in a fluid (typically air) when drag balances gravity, using v_t = √(2...

basic
6,520 3.8 1 min

No articles published yet.

Reviewed by Dr. Helena Ortiz

These calculators were technically reviewed by Dr. Helena Ortiz for accuracy.

Physics / Electricity

Capacitance Calculator

Compute the capacitance of a parallel-plate capacitor from plate area, plate separation, and the dielectric constant.

basic
12,524 4.1 1 min
Chemistry / Solutions

pOH Calculator

Compute pOH from hydroxide ion concentration and the matching pH at 25 °C.

basic
18,221 4.2 1 min
Ecology / Carbon Footprint

Carbon Footprint Calculator

Estimate your annual personal CO₂e footprint from home energy, driving, flying, and diet — with adjustable emission fact...

Featured basic
15,826 4.9 1 min