For a particular casting setup, the top of the sprue has a diameter of 0.030 m, and its length is 0.200 m. the volume flow rate of metal into the mold is 0.03 m3 /min. what is the resultant velocity at the bottom of the sprue? also, what diameter should be specified at the bottom of the sprue to prevent air aspiration? what is the reynolds number at the bottom of the sprue. is the flow laminar or turbulent? assume the pressure at the top and bottom of the sprue is atmospheric pressure. viscosity of the metal used is 0.004 n. s / m2. density of the metal is 2700 kg/ m3 .

Answer with Explanation:

We are given that

Diameter=0.030 m

Length of sprue==0.200 m

Metal volume flow  rate,Q=0.03

Q= because 1 minute=60 seconds

Let 1 for the top and 2 for the bottom

Pressure at the top and bottom of the sprue is atmospheric

Substitute the values

Reynolds number=

Substitute the values then we get

Reynolds number=

Reynolds number=42525

The Reynolds number is greater than 4000 .Therefore, the flow is turbulent.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

i really hope this answer you out! it makes my day people like you and giving back to the community that has me through school! if you could do me a favor, if this you and this is the very best answer and you understand that all of my answers are legit and top notch. mark as brainliest! and have a awesome day!