Heres a link to the Facebook group, and if you just post in there and ask for the Physics group chat someone will add you https://www.facebook.com/groups/910071195801048/?fref=nf&__xts__[0]=68.ARATfrcJvsEawM5GgaTwUeRB-g6niVgiMCeVY1wlGcoLHDRyR6QDBPONirMYlNczES7xliocPj3MDeoNKEF2RfyBFm69mUWHEM2EQYKDB1a5-z4Xaa_03MSew3EiW29I5e-l7Kk3Otwmv3Q4hcera4KhRDM5obp6T_UmdXPgfOaRp1XcugGEDWbZHOpTEbuIpkiwMEhg-bT_lyYLSeEyUY4xhSWIigeQxf-WG_iBWg&__tn__=C-R