Questions 1-5 (Total=25 marks) \begin{tabular}{|l|l|} \hline Question 1: What is the weight density of liquid? & 5 \\ \hline Question 2: What is the turbulent flow in fluid mechanics? & 5 \\ \hline Question 3: When does an overturning couple happen in a floating body? & 5 \\ \hline Question 4: How does the flow velocity change across a pipe diameter? & 5 \\ \hline Question 5: In a floating body when the equilibrium is stable, what is the position of the centre of gravity G of the body relative to the metacentre M? & 5 \\ \hline \end{tabular}