1. A steel is 80 cm long at 40 oC. The coefficient of linear expansion for steel is 12 x 10-6 oC-1. The increase in length and the final length when it is at 140 oC will be… QUESTION : ΔL...? then L..?

2. An iron rod heated from 30 oC to 80 oC. The final length of iron is 115 cm and the coefficient of linear expansion is 3×10-3 oC-1. What is the original length and the change in length of the iron ?
QUESTION L0...then ΔL?

3. at 20oC, the length of a sheet of steel is 50 cm and width is 30 cm ,if the coefficient of expansion for steel is 10-5 oC-1.
determine the change in area and the final area at 60oC
question ..ΔA...?A...?

4. An object made of metal has a length of 20 cm. How long is the end of the metal if there is a temperature change of 40 ° C? (metal length coefficient 0.001 ° C-1)

5. A plate made of aluminum with the initial area of 50 cm2 has a temperature of 10oC. If the plate is heated to 100oC, what is the extensive increase in aluminum? (Aluminum Length Coefficient = 2.4 × 10-5 / OC)