electrostatics /ɪlˌɛktɹoʊstˈæɾɪks/ /ɪlˌɛktɹəʊstˈatɪks/
electrostatic /ɪlˌɛktɹoʊstˈæɾɪk/ /ɪlˌɛktɹəʊstˈatɪk/