Water at a gauge pressure of p = 5.8 atm at street level flows into an office building at a speed of 0.68 m/s through a pipe 5.0 cm in diameter. the pipe tapers down to 2.6 cm in diameter by the top floor, 16 m above, where the faucet has been left open. assume no branch pipes and ignore viscosity.
a. calculate the flow velocity. express your answer to two significant figures and include the appropriate units.
b. calculate the gauge pressure in the pipe on the top floor.

Sorry i don’t know what to do

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3

Answerall of these is your answer

Average net force: ∑f = fapp + fgrav = 8.20 + (-9.81m/s²)(0.500 kg)           = 3.295 n          = 3.30 nvelocity of object∑f = maa = ∑f / m = 3.295 n / 0.500 kg = 6.59 m/s²v² = v₀² + 2adv = √(v₀² + 2ad)v = √[ 0² + 2(6.59m/s²)(1.50m) ]v = 4.45 m/s