When quantifying dynamic fluids, flow rate (q) is determined in the continuity equation [av1=a2v2].

however, quantifying the viscous flow of a fluid "poiseuille's law" incorpates
l'lenth
eta' coeifincent of viscosity
radiaus
and change in pressure

my question:
what exactly is being calculated in poiseuille's law? how is is different form flow rate q?

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

What happens when the number of protons in an atom changes