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Get Full Access to University Physics - 13 Edition - Chapter 17 - Problem 125cp
Get Full Access to University Physics - 13 Edition - Chapter 17 - Problem 125cp

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# A steam pipe with a radius of 2.00 cm, carrying steam at

ISBN: 9780321675460 31

## Solution for problem 125CP Chapter 17

University Physics | 13th Edition

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University Physics | 13th Edition

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Problem 125CP

A steam pipe with a radius of 2.00 cm, carrying steam at is surrounded by a cylindrical jacket with inner and outer radii 2.00 cm and 4.00 cm and made of a type of cork with thermal conductivity 4.00 × 10-2 W/m · K. This in turn is surrounded by a cylindrical jacket made of a brand of Styrofoam with thermal conductivity and having inner and outer radii 4.00 cm and 6.00 cm (Fig. P17.125). The outer surface of the Styrofoam is in contact with air at 15°C Assume that this outer surface has a temperature of 15°C (a) What is the temperature at a radius of 4.00 cm, where the two insulating layers meet? (b) What is the total rate of transfer of heat out of a 2.00-m length of pipe? (?Hint: ?Use the expression derived in part (c) of Challenge 17.124.)

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Chemistry of Life Wednesday, August 24, 2016 11:23 AM ORBITALS - Sphere (s), dumbbell (p), have 2 e- - Lowestenergy level is K (1 s orbital) - Next is L (1 s orbital, 3 p orbitals) - If e- movesto higher energy level, energy is absorbed - If e- movesto lower energy level, energy is released ○ e- has potential energy because of its position PERIODIC TABLE - Created by Dmitri Mendeleev - 8-elementperiodicity based on interactions of valence e- - If full valence electron, then element is inert/radioactive(noble gases) IN LIVING SYSTEMS - C, H, O, N, P, S, Na, K, Ca, Mg, Fe, Cl ○ *main ones - Zn, I are trace elements but critical COVALENT BONDS - Strength depends on number of shared electrons - H2 is stable because:

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A steam pipe with a radius of 2.00 cm, carrying steam at