Answer:
Pressure increases due to enlargement
Explanation:
Energy density is just a fancy name for pressure
Pressure is same at the bottom of the cups (same level-Pascal's law)
thus, Air pressure 1 + h1d1g = Air pressure 2 + h2d1g
= Air pressure 3 + (h2-h1)d2g +h1d1g
from the first 2, we get that since h2>h1, AP2<AP1
from the next 2, we get that since d2<d1, AP3>AP2
from first and third, we get that AP1>AP3
thus, finally AP1>AP3>AP2
for fluids flowing in tubes (blood vessel in this case)
P+0.5dv^2 + gh is constant (also called the bernoulli equation
for the same blood vessel, the heights remain same i.e h1=h2
for same flow rate, inc in area decreases the speed at which the blood flows as vA must remain same
hence, P increases due to enlargement
