Suppose That an Aluminum Wire Were to Be Strung Out

Multiple Choice

Suppose that an aluminum wire were to be strung out in a loop that just fits snugly around the equator (assuming a perfectly spherical Earth with a radius of 6.37 × 10⁶ m) . If the temperature of the wire is increased by 0.50°C, and the increase in length is distributed equally through the entire length, how far off the ground will the wire loop be? The coefficient of linear expansion of aluminum is 24 × 10^-6 K^-1.

A) 7.6 mm
B) 76 mm
C) 76 cm
D) 76 m
E) 760 m