The circular stream of water from a faucet is observed to taper from a diameter of 20 mm to 10 mm in a distance of 50 cm. determine the flowrate.

Solution:

From Bernoulli equation

ρ + ρgh = ρ , where ρ is density of water, h – height difference and and  are the velocities in upper and lower cross sections correspondingly. We take into account that the pressure in both cross-sections is the same and equal to the atmospheric one.

From the continuity and assuming water incompressible:

= , where and are the corresponding cross-sections. As the lower diameter is twice as low as the upper one, we can conclude that

Inserting it back into Bernoulli equations produces:

and the flow rate is

dude thats to long figure it

step-by-step explanation:

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet