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a) Find the flow speed at the wide portion.

b) Find the flow speed at the narrow portion.

c) What is the pressure difference between these portions? 1.69×104 Pa

d) What is the difference in height between the mercury columns in the U-shaped tube? 12.7 cm

How do I find a and b knowing c and d?

** So far I now:

v1A1 = v2A2

v2 = A1/A2 x v1

By applying the principle of conservation of energy:

p +(0.5*rho*v1^2) + rho*g*y1 = p + (0.5*rho*v2^2) + rho*g*y2