Hello. Can you please help answer the question shown in the photo? It is a 3-part question which I have attempted many times. I was able to calculate the correct answer for part 2, but part 1 and part 3 still says I am incorrect. Please show how to properly solve the problem. The topic is heat transfer. Thank you. 5Part 1 of 3Incorrect6Part 2 of 3Correct7Part 3 of 3Incorrect!Determine how long it will take for the temperature of sphere to rise to 21°C. (You must provide an answer before moving to the nextpart.)40 x min!Required informationConsider a sphere of diameter 5 cm, a cube of side length 5 cm, and a rectangular prism of dimension 4 cm x 5 cm x 6cm, all initially at 7°C and all made of silver (k = 429 W/m•K, p = 10,500 kg/m³, cp = 0.235 kJ/kg•K). Now all three of thesegeometry are exposed to ambient air at 33°C on all of their surfaces with a heat transfer coefficient of 12 W/m².K.!Required informationConsider a sphere of diameter 5 cm, a cube of side length 5 cm, and a rectangular prism of dimension 4 cm x 5 cm x 6cm, all initially at 7°C and all made of silver (k = 429 W/m•K, p = 10,500 kg/m³, cp = 0.235 kJ/kg.K). Now all three of thesegeometry are exposed to ambient air at 33°C on all of their surfaces with a heat transfer coefficient of 12 W/m².K.Determine how long it will take for the temperature of cube to rise to 21°C.22.1 → minRequired informationConsider a sphere of diameter 5 cm, a cube of side length 5 cm, and a rectangular prism of dimension 4 cm x 5 cm x 6cm, all initially at 7°C and all made of silver (k = 429 W/m•K, p = 10,500 kg/m³, cp = 0.235 kJ/kg•K). Now all three of thesegeometry are exposed to ambient air at 33°C on all of their surfaces with a heat transfer coefficient of 12 W/m².K.Determine how long it will take for the temperature of rectangular prism to rise to 21°C.214.8 min

The thermal properties of the silver are Thermal conductivity k= 429 W/m.K Density p= 10500 kg/m3…

Can you please help answer the question shown in the photo? It is a 3-part question which I have attempted many times. I was able to calculate the correct answer for part 2, but part 1 and part 3 still says I am incorrect. Please show how to properly solve the

Can you please help answer the question shown in the photo? It is a 3-part question which I have attempted many times. I was able to calculate the correct answer for part 2, but part 1 and part 3 still says I am incorrect. Please show how to properly solve the

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.55P

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1.3 A furnace wall is to be constructed of brick having standard dimensions of Two kinds of material are available. One has a maximum usable temperature of 1040°C and a thermal conductivity of 1.7 W/(m K), and the other has a maximum temperature limit of 870°C and a thermal conductivity of 0.85 W/(m K). The bricks have the same cost and are laid in any manner, but we wish to design the most economical wall for a furnace with a temperature of 1040°C on the hot side and 200°C on the cold side. If the maximum amount of heat transfer permissible is 950 , determine the most economical arrangement using the available bricks.
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