Please solve every questions with detailed steps. Please provide the sources yo

Please solve every questions with detailed steps.
Please provide the sources you are using and referring to that helped you answer the questions
alongside your answers.
Please show all the assumptions, calculations and data/reasoning sources for all questions.
Number your solution as per the question for ease of understanding.
All the answers should be accompanied with SI units, unless specifically asked. Points will be
deducted otherwise.
Label all the drawings in your answer sheet for clarity.
Provide a problem-solving approach/schematic either before or after your solution. If your
approach is correct you will get partial credits.