Answered: boiling water

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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Question 3 a). i. The rise in temperature of an object as a result of the heat absorbe by the object. Differentiate between the italized underlined words. i. Using the information below explain which scald from a steam anc boiling water, both at 100 °C is more painful? [she of water = 4200J/Kg/K; 1=2260KJ/Kg; 1p=336000J/Kg; she of steam =2000J/Kg/K]b). b)In a Formular 1 race, during the warm up lap, the pressure of the tyres increased from 3.0 x 105N/m? to 3.5 x 105N/m? . If the initial temperature is 30°C, what is the final temperature of the tyre before the start of the race?c). c) i. A conductor transfers heat of 1550 J across its length of 20 cm in 6 seconds. Given that its cross-sectional area A is 55cm?. Determine the thermal conductivity of the material if the temperature difference across the ends is 77°C? ii) An object of emissivity 0.8 and cross-sectional area 55mm? at room temperature of 30° losses energy at a rate of 35.6 J/s. What is the initial temperature of the object? Hint; stefan's constant o = 5.6703 x10-8W/m/K+

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