Consider a large plate of thickness 50 mm and
thermal conductivity of k= 69 W/m.C in
which heat is generated uniformly at a constant rate of 600
kW/m3. One side of the plate is insulated while
the other side is subjected to convection to the environment at
30oC with a heat transfer coefficient
of h= 94 W/m^2.C. considering six equal
spaced nodes with a nodal spacing of 10 mm:
(a) obtain the Finite Difference
formulation of this problem,
(b) determine...
A plane wall has thickness of 5 cm, thermal conductivity of 2
W/mK and generates heat. The left face of the wall (x=0) has a
surface temp. of 80C and has air at 20C flowing past it with a heat
transfer coefficient of 50 W/m^2K. If the right face is insulated
then the temperature distribution through the wall has a general
format T(x)=A+B*x+C*x^2
(a) Draw a properly labeled diagram (including a representative
temperature distribution), state all assumptions and calculate the...
1. What are the SI units of conductivity? a. What is the conductivity of deionized water? b. What is the conductivity of tap water? c. What is the conductivity of sea water? 2. What does the conductivity of a solution indicate? 3. How many milliliters of concentrated sulfuric acid are needed to make up 1.00 liter of 0.080 M sulfuric acid? (Note: a volumetric flask is employed for the dilution.) 4. How many grams of Ba(OH)-8H,O are needed to make up 1.00 liter of 0.010 M...
Anatomy absorbs x-rays based on the density of the
structure (subject thickness). Considering your understanding of
how black, grey, clear and white tones (radiolucent and radiopaque)
are created on an x-ray film, Why do some anatomical structures
appear black, and others clear or white? Why do some structures
allow more x-rays to pass through and energize the film crystals,
while others do not?
The electrical conductivity of a 1 M HCN solution is much less
than the conductivity of a 1 M HCl solution because:
-HCl is a weak electrolyte, HCN is a strong electrolyte.
-HCl is a strong electrolyte, HCN is a weak electrolyte.
-HCN contains more atoms than HCl so it has greater mass.
-HCl has a greater mass than HCN.
-The charge on the chloride ion is higher than the charge on the
cyanide ion.