33. Based on Figure 2, the relationship between(in kPa) and D (in m) for the water in the tank is best represented by which of the following equations?
Your Answer is
Correct Answer is A
Explanation
Method 1: Stupid but learning scum General method: Look at figure 2, take any point on the PL line segment. For example, when the abscissa is 10, the ordinate is about 100, and PL=10D, which is the closest to option A
Method 2: Powerful learning method: liquid pressure P=ρgh, h depth in this article The middle is D, so P=ρgD
G=9.8, ρwater=1 and P=9.8D