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# (a) A wire that is 1.50 m long at 20.0°C is found to

ISBN: 9780321675460 31

## Solution for problem 23E Chapter 17

University Physics | 13th Edition

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University Physics | 13th Edition

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Problem 23E

(a) A wire that is 1.50 m long at 20.0°C is found to increase in length by 1.90 cm when warmed to 420.0°C. Compute its average coefficient of linear expansion for this temperature range. (b) The wire is stretched just taut (zero tension) at 420.0°C. Find the stress in the wire if it is c??led to 20.01°C without being allowed to contract. Young’s modulus for the wire is 2.0 × 1011 Pa.

Step-by-Step Solution:
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Solution 23E a) The coefficient of linear expansion is defined mathematically as, L= L T ------------------(1) 0 Where L i0 the initial length. L is the change in length due to temperature change. T is the change in temperature. So, as we know the initial length, change in length, initial and final temperatures, let’s calculate the expansion coefficient. = 1 L = 1 × 0.019 L L0T 1.50 42020 = 1 × 0.019= 0.00003166 = 3.166 × 10 5 1.50 400 CONCLUSION: 5 The coefficient of linear expansion is 3.166 × 10 . b) The young’s modulus is...

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##### ISBN: 9780321675460

Since the solution to 23E from 17 chapter was answered, more than 850 students have viewed the full step-by-step answer. This full solution covers the following key subjects: Wire, Linear, Being, coefficient, compute. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13. The full step-by-step solution to problem: 23E from chapter: 17 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. The answer to “(a) A wire that is 1.50 m long at 20.0°C is found to increase in length by 1.90 cm when warmed to 420.0°C. Compute its average coefficient of linear expansion for this temperature range. (b) The wire is stretched just taut (zero tension) at 420.0°C. Find the stress in the wire if it is c??led to 20.01°C without being allowed to contract. Young’s modulus for the wire is 2.0 × 1011 Pa.” is broken down into a number of easy to follow steps, and 72 words. University Physics was written by and is associated to the ISBN: 9780321675460.

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