Suppose you stand with one foot on ceramic flooring and one foot on a wool carpet, making contactover an area of 80 cm² with each foot. Both the ceramic and the carpet are 1.9 cm thick and are 8 degC on their bottom sides. At what rate must heat transfer occur from each foot to keep the top of theceramic and carpet at 35 deg C?The thermal conductivity of carpet k =0.04 J/(s m °C)The thermal conductivity of ceramic k =0.84 J/(s m º°C)Rate of Heat Transfer of Wool= 0.04547tWRate of Heat Transfer of CermaicQc0.5657t✓WNo, that's not the correct answer.

Answered: Suppose you stand with one foot on…

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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An aluminium ring with a hole having area 4.02 cm² is to be shrink fitted on a steel rod with cross sectional area of 4.04 cm2. Both rod and ring were initially measure at a temperature of 35.0 °C. At what common temperature will the aluminium ring be exactly the same size as the steel rod? The measured coefficient of thermal expansion of steel is 11.0x10-6 K1 and the measured coefficient of thermal expansion of aluminium is 24.0x10-6 x-1.
Thank u! A copper rod has one end in ice at a temperature of O°C, the other in boiling water. The length and diameter of the rod are 1.80 m and 3.90 cm, respectively. At what rate in grams per hour does the ice melt? Assume no heat flows out the sides of the rod. Thermal conductivity of copper is 401 W/(m-K). Latent heat of fusion for water, Lf= 333.7 J/g. Water boils at 100°C
At what rate is heat lost through a 1.3 m x 2.7 m rectangular glass window that is 0.32 cmthick when the inside surface temperature of the glass is 22°C and the outside surface temperatureof the glass is 16°C? The thermal conductivity of glass is 0.75 W/(m-K)[1m = 100 cm]
A large steam pipe is covered with a 4.80 cm thick insulating material with a thermal conductivity of 0.17 W/(m°C). How much energy is lost every second when the temperature of the steam inside the pipe is at 265 °C and the temperature outside of the pipe is 13.0 °C? The pipe has a diameter of 3.70 m and a length of 185 m. Neglect losses through the ends of the pipe. 3863.3 J
A cubical piece of heat-shield-tile from the space shuttle measures 0.19 m on a side and has a thermal conductivity of 0.065 J/(s-m.C°). The outer surface of the tile is heated to a temperature of 1160°C, while the inner surface is maintained at a temperature of 18°C. (a) How much heat flows from the outer to the inner surface of the tile in 5.0 minutes? (b) If this amount of heat were transferred to 1.7 liters (1.7 kg) of liquid water, by how many Celsius degrees would the temperature of the water rise? (a) Number i (b) Number i 7 Units Units Heat flow
Ice of mass 10.0 kg at 0.00° C is placed in an ice chest. The ice chest has 2.00 cm thick walls of thermal coductivity 1.00 x 10^-5 kcal/s-m-C° and a surface area of 1.30m^2. (a) How much heat must be absorbed by the ice before it melts? (b) If the outer surface of the ice chest is at 30.0° C, how long will it take for the ice to melt?
A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in −1.00ºC water. The walrus’s internal core temperature is 37.0ºC , and it has a surface area of 2.00 m2 . What is the average thickness of its blubber, which has the conductivity of fatty tissues without blood?
Suppose a house's walls are 13.5 cm thick and and have an average thermal conductivity twice that of glass wool. Given: Thermal Conductivity of glass wool= 0.042k Calculate the rate of heat conduction, in watts, through the house's walls. Assume there are no windows or doors. The surface area of the walls is 120 m2 and their inside surface is at 16°C, while their outside surface is at 5.15°C .

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