#6. My buddy is starting to get hypothermic (body temperature 306 K) during an epicbackcountry ski adventure. Since I'm quite warm (body temperature 310 K), I decide toget in a sleeping bag with him to try and warm him up. What heat transfer mechanismwill be most responsible for heating him up? For simplicity, ignore any internal temperaturedifferences across my body (that is, assume my skin temperature is also 310 K). Use num-bers to support your answer (for human skin, you can use the following values: surface areaA = 1.50 m², emissivity e = 0.970, thickness d = 0.0250 m, thermal conductivty 0.200 )m-s-K

Given : Buddy,s body temperature, T2 = 306 K Person,s body temperature, T1 = 310 K Surface area of…

Answered: #6. My buddy is starting to get…

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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Calculate the molar heat capacities of the following gases: a. Helium ( molar mass= 4.00 g/mole) b. A monatomic gas that has a molar that is 5 times the molar mass of helium. c.Hydrogen ( molar mass = 1.00 g/mole) d. Carbon Dioxide ( molar mass = 44.0 g/mole)
#1. Consider a lake in Vermont at the end of summer. At the end of summer, you can assume the average surface water temperature is about 20 °C and the bottom of the lake is about 10 °C. Explain in detail what happens as the cold air of winter arrives. Be sure to discuss in detail how various heat transfer mechanisms are working.
5. A 200-g metal container insulated on the outside, holds 100 of water in thermal equilibrium at 22°C.A 20-g ice cube, at the melting point, is dropped into the water, and when thermal eauiliorium is reached the temperature is n 15°C. Assume there is no heat exchange with the Surroundings. For water, the seecific heat is 4190 Te ond the latent heat of fusion is 3.34•10 g. J a) What is the specific heat of the metal container? bJ What is the total change in entropy? Calculate the entropy Change for each process independentV ond odd them to get the final result. Is this result consistent with the Second low of Thermodynamics Explain.
QUESTION 9 During the video on heat conduction, H through a single pane window was calculated. Now, consider a window that has wo panes with a 6 mm air gap between them. Each pane has an area of 1.9 m. The window separates the inside of a house at 22 °C from the outside at 0°C. Let Kair = 0.03 W/(m-K). Hint: This problem can be simplified by noting that the thermal conductivity of glass is much greater than air, so the effect of the glass on the total conductivity can be ignored. Therefore, the purpose of the two glass panes is to support the layer of air between them. Calculate the heat current H through the double glass pane window in watts. Do not include units in your answer and state your numerical answer in normal form. QUESTION 10 Consider process 3 in the figure below (or in First_Exam_Figures.pdf) shown by the bold solid line with an arrowhead. The pressure of a gas is decreased at constant volume. V. Click Save and Submit to save and submit. Click Save All Ansuers to save all…
Use the position function ?(?) = −4.9t2 + v0 + s0 for free-falling objects. A rock is dropped from the edge of a cliff that is 176.4 meters above the water A. Determine the position function for the rock B. Find the velocity function for the rock. C. Find the velocity when t = 2 seconds. D. Find the time required for the rock to reach the surface of the water E. Find the velocity of the rock at impact with the water.
Latent heat from steam to water is 2260000 and from to water is 333000
B1
1.
20:36 M Q4. A substance takes in energy of Q 1 point to increase its temperature by AT. Which formula can calculate the heat capacity (C) of the substance? * C-Q ΔΤ C = Q/AT C- ΔΤ/Q Q5. The more massive a substance, 1 point the the heat capacity. * smaller same larger Q6. The specific heat capacity of a 1 point substance is defined as: * the amount of energy required for substance of 1 kg to increase the temperature by 1 °C. the amount of energy for a substance required to increase the temperature by 1 °C. the volume of substance to store 1 °C of heat. II O O O

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