De or het dynamica?

The correct Dutch article is:

de dynamica

Rule Words ending in -ica: usually de. See the rule
Meaning (Dutch) (natuurkunde) leer van de bewegingsverschijnselen

How to use dynamica

the dynamicade dynamica
this dynamicadeze dynamica
that dynamicadie dynamica
our dynamicaonze dynamica
your dynamicajouw dynamica
every dynamicaelke dynamica
which dynamica?welke dynamica?
a big dynamica / the big dynamicaeen grote dynamica, de grote dynamica

Dutch words ending in dynamica

vloeistofdynamica | chromodynamica | thermodynamica | aerodynamica | elektrodynamica | kwantumelektrodynamica | populatiedynamica

In compound words, the last part decides the article. See the rule

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).