Question

POR FAVOR AYUDENME A RESOLVER ESTO:

Halla el coeficiente de dilatación lineal de una varilla que a 10 grados centígrados mide 125 metros y cuya longitud a 85 grados centígrados es 125.20 m. ¿De qué material será?

Answer 1

α = 2.13 10⁻⁵ C⁻¹ , the closest material is ALUMINUM

Step-by-step explanation:

The expression for thermal expansion is

ΔL = α L₀ ΔT

temperatures are

ΔT = 85 - 10 = 75 ° C

the length of the rod is L₀ = 125 m and L_f = 125.20 m

ΔL = 125.20 - 125 = 0.20 m

α =
`(1)/(L_o) (\Delta L )/(\Delta T)`

α =
`( 1)/(125) \ (0.20 )/(75)`

α = 2.13 10⁻⁵ C⁻¹

When reviewing the table, the closest material is ALUMINUM