In a Physics experiment, a bar of aluminum, initially 80 cm (0.80 m) long, is brought from room temperature of 23oC to 100oC by surrounding it with steam. By how much does the aluminum bar expand?
From a table we find that the coefficient for linear expansion for aluminum is


= 24 x 10 - 6 (Co) - 1


L = 0.0148 mm

L = 0.148 mm

L = 1.48 mm

L = 1.48 m

(c) 2002, Doug Davis; all rights reserved