Physics 122 Types of Forces II - Hanging Signs. (see your note handouts for problems) Physics 112 Doppler Shift. # 39 - 42, 50 of waves worksheet. Astronomy 120 Mars. During March break read through chapters 7 & 8. Project (astronomy_120_solar_system_research_project.pdf) references are due this Friday, March 4. Math 9 Solving Equations: Variables on Both Sides # 1 - 17 (odds) of the worksheet (equations02.pdf)