Question

Initial Initial Final Initial length micrometer micrometer Delta temp Final Delta alpha alpha (m) setting setting IL temp T (measured) (theory) Aluminum 0.63 0 0.91 mm 24.1 100 24x10-6 Copper 0.64 0 0.78 mm 23.1 100 16.8 Steel 0.61 0 0.53 mm 24.7 100 13.4 Theory: L(T)=Lo (1+ a(T-To); A T=T-T o; A L=L-LO 1. Alfa Ameas= A L/L AT 2. Percent Error %=[ (ath- Am)/ ath] 100% 3. Alfa copper=16.8 x10-6(1/C) 4. Alfa steel =13.4 x10-6 (1/C) 5. Alfa aluminum= 24x10-6(1/C)

Answer 1

Initial initial I Della Mihal lapun mal mirrometer, Delta Selting / L mi Gometer Icelting alpha IL | Final ewY |1 I temp or I alpha measured Bheory | Aluminium 0.63 | copper (0.64 Steel 10o61 o 0o91 mm 0-91mn 24.1 1100 115.9 19.0x106/24 X 106 00078 mm 0.78 mm 23.1 100 16.9 15.8*10* 16.8x106 o 10.53 m, 0.83m 28.7 100 7503 11:54 x 100 | 13.4X106 | 3x75.9 °C/ for Aluminium AL 0.91 mm 0.91810 ont dimeas - - 2 Ō.634X 15.90 0.63 x 75.9 Linens = 19:03 x10-6 oct for copper on 0.78 8103 m = 1508x10buch is LAT 0.64m x 76.9°C For steel, 0.53X103 Imens = al lot = 0.6lMx 753 % - = 11.54 X 10607 - a mensat 0.64m n

% error от д/им і умом , (24-1900)x10-6 x 100 %, Emru = 24 x 106 24 x 10" : 4 x 1 0 0 1 % am = 2008%| for copper % ervor. = (16-8-15.8) X106 76.8x726 X 100 16.8. F X.100 1%E780v = 5:95%! for steel, (1304-11.54) 10 13.4x106/ Xo6 % enor = 13. 426 X10 . 1086 x 100 13.4 D ii! % Error = 1309 %