Chapter 5, Problem 2CP

I need step by step and detailed explanations to better understand,  please help Note: if you think you need to have more information to solve this problem, you're free to make assumptions. Please state them clearly in your answer, if you need to make such assumptions.

Step by step solution:-

Hello, can you please help me with this question attatched, I dont undersand how they got those answers.

Please answer with a step by step process and explanation

hello, this two question are different question but making use of the same techniques, however i am unable to get the answer for the yellow boxes after applying the steps in the solutions. can you help me do a step by step using the same method in the solution for the yellow boxes

Consider you have four long, 2 cm diameter rods, one each made of copper, steel, wood, and glass. They are to be cooled from a high temperature for 10 minutes. If you want to describe how the temperature changes with time, what approach is best for each of these rods. Balance solution accuracy against efficiency and justify with rules of thumb given

Is it necessary to provide CONTINGENCY in your quantification/estimation? Justify your answer.

I do not understand how question 1.2 was solved on the above problem. If you can clarify or solve it in a simpler manner I'd appreciate it.

Show the step by step solution and explanation on how we arrive in the answer