Rod 1 (6 m) heated from 30°C to 80°C becomes 6.0051 m. Rod 2 (6 m) heated from 20°C to 60°C becomes 6.0045 m. The two ro

Question

Rod 1 (6 m) heated from 30°C to 80°C becomes 6.0051 m. Rod 2 (6 m) heated from 20°C to 60°C becomes 6.0045 m. The two rods are —

Accepted Answer

of different materials because their linear expansion coefficients differ ($1.7 	imes 10^{-5}$ vs $1.875 	imes 10^{-5}$ K$^{-1}$)

Answer

of the same material because both expand

Answer

of the same material because lengths are equal

Answer

impossible to compare without mass