A steel tape 1m.long is correctly caliberated at 27c.The length of a steel rod measured by the tape is found to be 63 cm.on a hot day when temp is 45c .What is the actual length of the rod on that day? What is the actual length of the same steel rod at 27c?[coeff of linear expansion of steel is 1.20x10-5 c-1.]
Hermionie , 7 Years ago
Grade 11