10 AL= Lia At VR=VitOV AB= BisB-SmallB LEZLitAL TE= TI1ST AVEVIBAT DVEVIC AB 207 PHYSICS WORKSHEET 3a=B AL = Li Ca ) At THERMAL EXPANSION Da = Biga-shalla 1. A metal rod, observed to be 102. 302 em long at 20 C, is 102.433 an long at 70 C. Out of which motal night the rod be made? ( 25.5 x 10*-6/C, magnesium) 2. The stool main span of the Golden Gate bridge is 1260 a long. What allowance must be make for expansion if the temperature varies between 40 C and -15 c? (0.762 m) . ,747 3. A motorist at 40 liters of gasoline on a cold day when the temperature is -20 C. What is the volume of the gasoline after it has warned up to +20 C? (41.52 L) 4. In assembling a steel bridge, a steel rivet 3.810 em in diameter is to be placed in a hole 3.007 en in diameter. Would it be possible to do the job by first cooling the rivet in dry ice (-78 C)? Air temperature is 22 C. (0.0042 em.cont. , yes) 5. An iron ball 5.00 ca in diameter is 0.001 on too large to go through a hole in a brass plate when the ball and the plate are at 20 C. At what temperature, the name for the ball and the plate, will there be a anuq fit? ( 45 c) - 479 6. An iron rim is to be placed around a wagon wheel whose circumference at 15 C is 270.562 cm. The rin's inside circumference at 15 c is 270.020 cm. To what temperature must the band be heated so that it will fit snugly on the wheel? (180 C) 7. A 200 L steel drum is just filled with turpentine on a cool morning when the temperature is 7 C. How much turpentine will overflow in the afternoon when the temperature is 26 C. (Don't forget that the drum will also expand. ) (3.58 L) B. A lead and silver rod, each exactly 80 on long at 0 C, are ( placed alongside each other, and clamped at one end. Compute the separation of the free ends of the rods when the system is placed in a steam bath (100.C). (0.08 cm) 9. A brass canon has a bore 10 em in diameter at 20 C. A steel liner, in the form of a thin cylinder of outside diameter 10.020 cm at 20 C, is to be inserted. To what temperature should the canon be heated so that the liner (still at 20 C) can be inserted? (125 C) 143.3 10. To What temperature should BOTH the canon and the liner of problem /9 be heated so that the liner becomes loose and can be extracted? (270 C) or 217.7