A steel cable expands linearly with temperature according to . A bridge cable with coefficient undergoes a temperature increase of . What is the expansion in millimeters?
Answer and explanation
Correct answer: A.
- Step 1: Calculate expansion in meters: . Convert to millimeters: . **Answer: . Why not the others:** computes with a temperature change of 25, is an overestimate, and uses a length of 33 meters.
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