College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 82

A brass rod has a circular cross-section of radius 5.00 cm. The rod fits into a circular hole in a copper sheet with a clearance of 0.010 mm completely around it when both the rod and the sheet are at 20°C. (a) At what temperature will the clearance be zero (b) Would such a tight fit be possible if the sheet were brass and the rod were copper