Help 25 of 34Part A-120.0 cmbrassaluminum73 cm46.0 cmA brass rod is 73 cm long and an aluminum rod is 46.0 cm long when both rods are at an initial temperature of 0° C. The rods are placed in line with a gap of 1 cm between them. The distance between the far ends of the rods ismaintained at 120.0 cm throughout. The temperature is raised until the two rods are barelytemperature at which contact of the rods barely occurs, in °C, is closest to:contact. The coefficientsf linear expansion of brass and aluminum are 2.0 × 105 K1 and 2.4 x 105 K-1, respectively. In the figurea, the429O 390371O 351O 410SubmitRequest AnswerNext >Provide FeedbackMacBook ProF10888&%236.78.3.4

Answered: Part A -120.0 cm → brass aluminum 73 cm…

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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25 of 34
Part A
-120.0 cm
brass
aluminum
73 cm
46.0 cm
A brass rod is 73 cm long and an aluminum rod is 46.0 cm long when both rods are at an initial temperature of 0° C. The rods are placed in line with a gap of 1 cm between them. The distance between the far ends of the rods is
maintained at 120.0 cm throughout. The temperature is raised until the two rods are barely
temperature at which contact of the rods barely occurs, in °C, is closest to:
contact. The coefficients
f linear expansion of brass and aluminum are 2.0 × 105 K1 and 2.4 x 105 K-1, respectively. In the figurea, the
429
O 390
371
O 351
O 410
Submit
Request Answer
Next >
Provide Feedback
MacBook Pro
F10
888
&
%23
6.
7
8.
3.
4

Expert Solution

Step 1

Write the expression for the change in length of the rod of brass as follows.

$\begin{array}{rcl} ∆ L_{b r a s s} & = & L_{0, b r a s s} α_{b r a s s} ∆ T \\ = & (73 c m) (2.0 \times 10^{- 5} K^{- 1}) (T - 0 ° C) \\ = & (73 c m) (2.0 \times 10^{- 5} K^{- 1}) (T - 273 K) \end{array}$

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