Question: A particular part in a car engine expands as the engine warms up to operating temperature, but the amount of expansion depends on the metal

A particular part in a car engine expands as the engine warms up to operating temperature, but the amount of expansion depends on the metal from which the part is made. Rank the following metals from largest to smallest in terms of the amount that the length of the part would change for a certain temperature rise. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.)

  1. Copper (α = 17 ✕ 10−6/°C)
  2. Aluminum (α = 25 ✕ 10−6/°C)
  3. Lead (α = 29 ✕ 10−6/°C)

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