Thermal expansion(6) An aluminum tube is 30000m long at 20oC. What is its length at (a) 1000C and (b)OoC?(7) What is the change in length of a rod made up of 2000m of copper and 1000m ofaluminum placed end to end as it moved from an ice water bath to a steam bath?(8) A structural steel l-beam is 15m long when installed at 200C. How much will its lengchange over the temperature extremes -300C to 500C?ANS. 1.32cm(9) A metal rod made of some alloy is to be used as a thermometer. At OoC its length is40000cm, and at 1000C its length is 40060cm. (a) What is the linear expansioncoefficient of the alloy? (b) what is the temperature when its length is 39975cm?(10) A hole with diameter of 2cm is drilled through a stainless steel pate at roomtemperature (200C). By what fraction (Dr/r) will the hole be larger when the plate isheated to 1500C?(11) Calculate the fractional change in volume (Dv/v) of an aluminum bar that undergoea change in temperature of 300C.(6) The Eiffel tower is built from iron and it is about 324 m high. Its coefficientof linear expansion is approximately 12 x 10-6 (C°)- and assumed constant.What is the increase in the tower's length when the temperature changes from0°C in winter to 30°C?(7) A copper rod is 8 m long at 20°C and has a coefficient of linear expansica = 17 x 10-6 (C°)-. What is the increase in the rod's length when it is heateto 40 °C?(9) An iron steam pipe is 100 m long at 0°C and has a coefficient of lineexpansion a = 10 x 10-6 (C°)-. What will be its length when heated

Answered: Image /qna-images/answer/3d4ca0b1-7656-48a9-861c-893102abd66a.jpg

(6) An aluminum tube is 30000m long at 200C. What is its length at (a) 1000C and (b) OoC? (7) What is the change in length of a rod made up of 2000m of copper and 1000m of aluminum placed end to end as it moved from an ice water bath to a steam bath? (8) A structural steel l-beam is 15m long when installed at 200C. How much will its leng change over the temperature extremes -300C to 500C? ANS. 1.32cm (9) A metal rod made of some alloy is to be used as a thermometer. At 0oC its length is 40000cm, and at 1000C its length is 40060cm. (a) What is the linear expansion coefficient of the alloy? (b) what is the temperature when its length is 39975cm?

(6) An aluminum tube is 30000m long at 200C. What is its length at (a) 1000C and (b) OoC? (7) What is the change in length of a rod made up of 2000m of copper and 1000m of aluminum placed end to end as it moved from an ice water bath to a steam bath? (8) A structural steel l-beam is 15m long when installed at 200C. How much will its leng change over the temperature extremes -300C to 500C? ANS. 1.32cm (9) A metal rod made of some alloy is to be used as a thermometer. At 0oC its length is 40000cm, and at 1000C its length is 40060cm. (a) What is the linear expansion coefficient of the alloy? (b) what is the temperature when its length is 39975cm?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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why is the answer positive if the change in temperature is negative (initially at 100C then went down to 34C) isnt change in temperature Tf-Ti, so it would be 34-100 =-66C? also energy is being transferred out so wouldnt the answer be -6910 instead