Liquid methyl ethyl ketone (mek) flows through a pipe with an inner diameter of 2.067 inches at an average velocity of 0.48 ft/s. at the fluid temperature of 20°c the density of liquid mek is 0.805 g/cm3 and the viscosity is 0.43 centipoise [1 cp 1: 00 103 kg/ m s]. without using a calculator, determine whether the flow is laminar or turbulent. show your calculations.

Turbulent

Explanation:

The Reynolds number is:

Re = ρvL/μ

where ρ is the fluid density,

v is the velocity,

L is the characteristic length (for pipe, it's the diameter),

and μ is the dynamic viscosity.

Given:

ρ = 0.805 g/cm³

v = 0.48 ft/s = 14.63 cm/s

L = 2.067 in = 5.250 cm

μ = 0.43 cp = 0.0043 g/cm/s

Re = (0.805 g/cm³) (14.63 cm/s) (5.250 cm) / (0.0043 g/cm/s)

Re ≈ 14400

Flow is considered turbulent if the Reynolds number is greater than 4000.  So this is turbulent.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

false br