[3 / 1 / ?] 116KiB, 1683x765, qweqweqwe.png View SameGoogleImgOpsiqdbSauceNAO Tsiolkovsky rocket equation Anonymous Thu 29 Oct 2015 02:44:46 No.7623135 ViewReplyReportDelete Quoted By: can anybody help me find an expression for the question in the pic? Subject Name E-mail Password