Jawapan

2016-06-06T17:38:47+08:00
1. Small stem and long Increase sensitivity where the scale are far apart so the small changes in density can be detected 2. Glass wall - Do not erode and small edhesive force 3. Lead shots - Hydrometer can stay upright 4. Large diameter of bulb - Bigger upthrust, able to float easily , displace more liquid 5. scale can be made bigger or smaller than the density of water - ability to measure wider range of densities of liquids *im not very sure for this option