Question

1. Suatu bnda d tmbang dgn massa 125 g dgn volume 20 ml tntukan mssa jnisx..
2.btang tmbaga pda shu 20 drjt C. Pnjangx 50 cm ..d pnaskan hngga 70drjt C , koefisien 0,000017 .pnjang tmbaga stlah d pnaskan adlh ...

Answer 1

1. delta l = lo × koef × T
= 50 × 0,000017 × (70-20)
= 0,00085 × 50
= 0,0425cm2

Answer 2

Masa jenis = massa / volume
masa jenis = 125/20
masa jenis = 6,25 g/ml


L = Lo (1 + ALPHA × DELTA T)
L = 50 (1 + 0,000017 × 50)
L = 50 (1 + 0,00085)
L = 50 × 1,00085
L = 5 (10,0085)
L = 50,0425 cm