In an experiment to determine the thermal conductivity of a bar of a new alloy, one end of the bar is maintained at 0.0 °C and the other end at 100.0 °C. The bar has a cross-sectional area of 1.50 cm2 and a length of 18 cm. If the rate of heat conduction through the bar is 36 W, what is the thermal conductivity of the bar?

In an experiment to determine the thermal conductivity of a bar of a new alloy, one end of the bar is maintained at 0.0 °C and the other end at 100.0 °C. The bar has a cross-sectional area of 1.50 cm2 and a length of 18 cm. If the rate of heat conduction through the bar is 36 W, what is the thermal conductivity of the bar?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 58PQ

See similar textbooks

Similar questions

A sample of a solid substance has a mass m and a density 0 at a temperature T0. (a) Find the density of the substance if its temperature is increased by an amount T in terms of the coefficient of volume expansion b. (b) What is the mass of the sample if the temperature is raised by an amount T?
In an experiment to determine the thermal conductivity of a bar of a new alloy, one end of the bar is maintained at 0.200 °C and the other end at 101 °C. The bar has a radius of 9.00 cm and a length of 43.3 cm. If the rate of heat transfer through the bar is 34.0 W, what is the thermal conductivity of the bar? amazor W/m* C K =
In an experiment to determine the thermal conductivity of a bar of a new metal alloy, one end of the bar is maintained at 0.00°C and the other end at 100. °C. The rectangular bar is 2.25 cm x 2.25cm and a length of 0.500 m. If the rate of heat transfer through the bar is 15.0 J/s, what is the thermal conductivity of the bar to 3 sig fig? Material having thermal.conductivity Area A 51 sno
Suppose a walrus transfers energy by conduction through its blubber at the rate of 125 W when immersed in -1.25°C water. The walrus’s internal core temperature is 37.0°C, and it has a surface area of 1.85 m2. Chart attached. What is the average thickness of its blubber, in centimeters, which has the conductivity of fatty tissue?
Researchers are conducting a study to quantity the thermal conductivity of a composite material. A square box is made from 1932 cm2 sheets of the composite insulating material that is 5.2 cm thick. A 125 W heater is placed inside the box. Sensors attached to the box show that the interior and exterior surfaces of one face have reached the constant temperatures of 71°C and 23°C. What is the thermal conductivity in W/m-K?
The walls of the storage room are 3 m high, 16 m wide, and 25 cm thick. The thermal conductivity is k = 0.85 W / (m ° C). During the day, the inner wall surface temperature is 22 ° C and the outer surface temperature is 4 ° C: a. Using the Thermal Resistance Concept, calculate the heat transfer resistance for the wall. = Answer ° C / watt. b. Calculate the rate of heat transfer through the wall at steady-state conditions. = Answerwatt
In an experiment to determine the thermal conductivity of a bar of new aloy, one end of the bar is maintained at 0 °C and the other end at 100 °C. The bar has a cross-sectional area of 1.0 cm? and a length of 15 cm. If the rate of heat conduction through the bar is 34 W, what is the thermal conductivity of the bar?
What is the rate of heat transfer in J/s through the body's skin and the fat layer just beneath its surface? Treat the skin and fat as a single layer that is 1.20 cm thick. Assume the temperature of the inner surface of the layer corresponds to internal body temperature, or 36.7 °C, and the temperature of the outer surface of the layer corresponds to skin temperature, or 34.0 °C. Take the total surface area of the layer to be 1.50 m² and use a value of 0.413 W/(m-C°) for the average thermal conductivity of the layer. Number Units
A Styrofoam box has a surface area of 0.84 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 26°C. If it takes 8.0h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.
A copper sheet of area A is bonded to an unknown metal sheet of area A. The thickness of the unknown metal is half that of the copper. The outside surface of the copper sheet is held at a temperature of 80°C and the unknown metal sheet at 40°C. If the temperature of the copper-unknown metal interface is 60°C, what is the thermal conductivity of the unknown metal in (W/mK)? (Kcu = 386 W/m.K). Select one: O a. 193 b. 772 c. 258 O d. 386 O e. 220 O
500 g of Ice at 0 °C is kept in an insulated cubic box. The length of the box is 30 cm and the thickness of the wall is 0.5 cm. The thermal conductivity of the wall is 0.04 W/mK. If the environment temperature outside the box is 25 °C, Determine (a) the rate of heat loss due to the heat conduction.
A Styrofoam box has a surface area of 0.80 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 25°C. If it takes 8.0 h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.