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…

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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.

5
Part 1 of 3
Incorrect
6
Part 2 of 3
Correct
7
Part 3 of 3
Incorrect
!
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 next
part.)
40 x min
!
Required information
Consider 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 6
cm, 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 these
geometry are exposed to ambient air at 33°C on all of their surfaces with a heat transfer coefficient of 12 W/m².K.
!
Required information
Consider 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 6
cm, 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 these
geometry 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 → min
Required information
Consider 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 6
cm, 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 these
geometry 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

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Please solve only part 3. This is a 3-part question involving heat transfer. Part 1 and 2 are correct, but I need help how to find part 3. Thank you.

5
Part 1 of 3
Correct
6
Part 2 of 3
Correct
7
Part 3 of 3
Incorrect
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 next
part.)
22.08 min
!
Required information
Consider 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 6
cm, 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 these
geometry are exposed to ambient air at 33°C on all of their surfaces with a heat transfer coefficient of 12 W/m².K.
!
Required information
Consider 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 6
cm, all initially at 7°C and all made of silver (k= 429 W/mK, p = 10,500 kg/m³, cp=0.235 kJ/kg.K). Now all three of these
geometry 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 min
Required information
Consider 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 6
cm, 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 these
geometry 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

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