Lab 2 - Measurement and experiments become familiar with metric system of mea Related Concepts lowing relationships are useful ) Der aters (cm), or milimeters (mm). The 1 cam - 10 mm Im = 1000 mm To convert from cm to m, divide by 160. allmeters ). For a box-shaped object. the volume (vy taped ottery the WW 2;(V)Is given by the reason" Couble Figure 1 for liquids volume is measured in Hers Her = 1000 ml grams (9) or kilograms (way. measuring device. Each measuring device has a smallest une that can be accurately and from the measuring device and estimate. of guess. the max amanus un medown yet becom balance can measure diferences in mass as smalis 91 gem. estimate the result as 147 5t Maybe y reading to the new ofthe last digt is always a guess and may vary .142 53. There pathet example. The smalest unit of measurement on a typical meter sick 's Ten ementy ge are if you measure this something is 25 mm long. It probably nooz hm Your the 22 5 mim. This last aint is always a guess, so it's normal for there to be uncertainty for a single measurement a Salarmined by Be experimenter based on all past count of the instreamers as uncertainty or the hay simply guess iprovide the best EXTERIORS AD mom He means is usually taken as the average of the canbe ind entity has been espritof the most common way to show the range of Accuracy is how close a metaurine deng very as to the measurements wil be Precision is how close repeated measurements come to each other. f device that can he nearest meter. See diagram bel TO wish to compare that result with a known value, it is common to express the difference Here's how to calculate it: actual value x 160 and so the percent emer is always posiave. that case we talk of percent diference or decrepancy ence " best of the two values . of avg of the two values * 100 Triple Beam balance lis S were to possummovies grams in a lab setting. Parts of a triple beam balance' The mass of the offect is_ OO1 2 3 4 5 he length of the red is Ment Ruler A Uncertainty. which nuber has less uncertainty Part It Uncertainty from rapesed measurements (an instrument used to messure to he mater dof many continues Aug. L. 1:09 Avg. she deviation - toschuer decades Aye we can report the longt as, L = average length + average of the wet Il: Percentage Error & Density Calculation ") Use triple beam balance to m 2) Pour 400 mil of winter into the beaker and measure the mass of the beater and water. Data (pre-recorded) Mass of beaker and water (a) Mass of water ()