3. Calculate the density of (aluminum, brass, lead or any other materials) given to you by your instructor using Eq.1 and its uncertainty Ap. maV+Vam Ap- 4. Within how many standard deviations does your result agree with the accepted density of any of the used materials, could be copper, aluminum, brass or lead. Hint: use the relation: p accepted-paverage, #Sigmas-124 ************** ***** 2 3 4 5 6 7 8 9 10 Length ruler (mm) 19.5 20.1 20.2 20.5 20.2 20 at 20.6 20.4 19.8 19.7 10 = 201 1-1 |(al-d)| 181.5 180.9 180.8 180.5 180.8 181 180.4 180.6 181.2 181.3 |1-412 32942.2 32724.8 32688.6 32580.2 32688.6 32761 32544.1 32616.3 32833.4 32869.6 10a-d12-327248.8 11