Part A: 920 Btu/hr heat is conducted through a section of insulating material shown in Figure that measures 7.5 ft in cross-sectional area. The thickness is 0.53 inch. The thermal conductivity of the material is 0.195 W/m K. D Calculate the, a) area of the sample in square meter (m²): b) thickness of the specimen in meter (m): mart c) temperature difference in Kelvin : k Insulating Material A AX-

Part A: 920 Btu/hr heat is conducted through a section of insulating material shown in Figure that measures 7.5 ft in cross-sectional area. The thickness is 0.53 inch. The thermal conductivity of the material is 0.195 W/m K. D Calculate the, a) area of the sample in square meter (m²): b) thickness of the specimen in meter (m): mart c) temperature difference in Kelvin : k Insulating Material A AX-

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 107AP: A mercury thermometer still in use for meteorology has a bulb with a volume of 0.780 cm3 and a tube...

See similar textbooks

Similar questions

3 of 4 A stainless-steel-bottomed kettle, its bottom 25 cm in diameter and 1.6 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W. Review I Constants I Periodic Tabl Part A What is the temperature of the bottom surface of the kettle? Thermal conductivity of stainless steel is 14 W/(m K). Express your answer using four significant figures. VO AEO ? T = 102.65 °C Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 4 significant figures in the last step. Ne Provide Feedback
The porous catalyst pellet shown in Figure 1 has an overall radius R and a thermal conductivity k (which may be assumed constant). Because of the chemical reaction occurring within the porous pellet, heat is generated at a constant rate of Se cal/em s. Heat is lost at the outer surface of the pellet to a gas stream at a constant temperature T, by convective heat transfer coefficient h. Gas bemperature T, Figure I. Sphere with internal heat generation Answer the following questions (a) Make a list of assumptions that apply to the above situation. (b) Set up the differential equation by making a shell energy balance. Show the units for all variables that are used. (c) Specify the proper boundary conditions. (d) Integrate the differential equation with the above boundary conditions to obtain an expression for the temperature profile, and make a sketch of the function profile T(r) (e) What is the limiting form of T(r) when h co? (f) What is the maximum temperature in the system? (g)…
Water vapor at a pressure 0f 2X10 N/m2 0nd a dempirature of as0°c is 0.32 x106 N/m2.following expanded to a yoessune of ec.For the low P.V1.25 this expanston determine: a. Pinal vapor condnion b. Syecipie haat transpan c. Changis in tntroyy SIDU
Iculate the coefficient of linear thermal expansion. Locate a table of linear thermal expansion ficients online or in your textbook and compare your experimental results to the accepted value using percent error. CALCULATIONS: 1. Calculate Δ-Thot-Trm Record the result in the Table 1. Use the Conversion Table at the end of this manual, or the one on the top of the expansion base, to convert your thermistor resistance measurements, Ryn and Rnot,into temperature measurements, Trm and Thot Record your results in the table. sing the equation AL = α 2, T, calculate α for copper, steel, and aluminum mrnfid=74 Τα(Experimental)x1051 Table 1 MaterialL R TR(m) LT R(hot) . T(Room)TT(hot)! ΔΤ (m) Ohm(2) (m)Ohm(2) c 15 666 112 8 3 15 3.1 53 10. Rod #1 2.76 x (o Rod #2 Rod #3 |.n5 | 66. I 18.3 | 8.29 | 35 | 88 Coefficient of Linear Expansion of: 3. 216x10' Rod #1 Rod #2 Rod #3- Table 2 Material | Composition | α(Theoretical)x105 | α(Experim Rod #1 | tin Rod #2 Rod #3 ental)x105 | Percent Difference %…
Must give answer then also give answer in significant fig format 11. The coolest part of the sun is the region called the chromosphere, which is the region above the sun's apparent surface, or photosphere. At 1,100 km above the photosphere, the temperature of the chromosphere is about 3,500,K. What is this temperature in degrees Fahrenheit and degrees Celsius?.od
A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What islare the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdture cc) B 120 + 100 80 60 40+ 20 + 12 4 6. 10 %3D 13 -20 Time (min) %3D F00
Problem 3: Suppose a 500-mL beaker is filled to the brim with ethyl alcohol at a temperature of 5.00°C. You may assume the beaker is made of tempered glass, and has effectively zero thermal expansion. Randomized VariablesT = 22.5 °C Part (a) What volume, in milliliters, will overflow the beaker when its temperature reaches 22.5°C? The coefficient of volume expansion for ethyl alcohol is 1.100 × 10-3 /°C. Part (b) What volume of water, in milliliters, will overflow under the same conditions? The coefficient of volume expansion for water is 2.10 × 10-4 /°C.
I want the calculation for this expiremnt Note: the unit of thermal conductivity w/m.k
Please, I need help with the 3 questions. I have tried solving them but the result is not consistent with other things im finding online... How do I even calculate the net on the first question...1)Consider a domestic hot water tank that has a total surface area of A = 2.9 m2. The tank and its contents are maintained at a constant temperature of 58 °C by an electric immersion heater and the temperature of the surroundings outside the tank is 19°C. The emissivity of the tank is ε = 0.76. Calculate the net power radiated by the tank (i.e. the difference between the power radiated and the power absorbed). Give your final answer to an appropriate number of significant figures. 2)The tank is now completely surrounded by an insulating layer of rock mineral wool of thickness l = 0.115 m. The thermal conductivity of rock mineral wool is k = 0.032 W m−1 K−1.You may assume that the surface area of the layer of rock mineral wool is the same as the surface area of the tank. Calculate the power…
An unknown material bar having length of 2.7m has 1m2 cross sectional area. One end is in contact with 373K and another end is 273K. Thermal conductivity of the material is 350W/mK. The total rate of heat flow is . .Joules/second. (Calculate up to one decimal point accuracy).
A mass of steam at 120°C is added to 2kg of ice at 0°C to yield water at 20°C. What is the total amount of energy in Joules is lost by the steam? ROUND OFF YOUR ANSWER IN WHOLE NUMBER. DO NOT WRITE THE UNIT IN YOUR FINAL ANSWER. L = 3.34x10²; Lv 2.26x106 Cwater = : 4186 kg.C; Csteam = 2010- kg.C =
A wire lengthens 4% due to thermal expansion when heated from T. to T. If the wire were bent into the shape of a square, what percent increase in length would you expect along one edge of the square? If the wire were bent into the shape of a circle, what percent increase in diameter would you expect? Explain, using sentences and diagrams.