7. A rivet has a hemispherical head 6mm radius and a stem of 6mm diameter ... The problem is that results i get are complex ( and so is the object I am observing​). ... K. ALASTAL 22 CHAPTER 3: STATIC FORCES ON SURFACES-BUOYANCY ... confirmed experimentally by projecting videos onto the PSD in a lab setting. 4.. Worksheet - Diffusion and Osmosis ANSWER KEY-1. ... Biology: Osmosis and Diffusion Lab using Potato Cores Class: 3B Mr. Boyer Name: ... See attached Observing Osmosis handout an