Question
In: Mechanical Engineering
an insulating wall 16cm thick has one face at 600 degree celsius while the other is...
an insulating wall 16cm thick has one face at 600 degree celsius while the other is at 100 degree celcius. The thermal conductivity of the material is given by K =0.078(1+17.95*10 exponent - 4) W/mK ant T is in degree celcius temperatures is 60 degree celcius determine the heat flow for a length of 5m. also find the mid layer temperature
Solutions
samet mamat answered 2 years agoRelated Solutions
A horizontal wire has one end fastened to a wall while the other end is pulled...
A horizontal wire has one end fastened to a wall while the other
end is pulled with a force of 200 N. The wire has a length of 5 m,
a volume mass density of 7,400 kg/m3 , and a resistivity
of 6.9e-07 Ωm. A transverse pulse takes 0.2 s to travel the length
of the wire. Calculate the electrical power dissipated by the wire
while a current of 2 A is passing through the wire
A horizontal wire has one end fastened to a wall while the other end is pulled...
A horizontal wire has one end fastened to a wall while the other
end is pulled with a force of 200 N. The wire has a length of 5 m,
a volume mass density of 7,000 kg/m3 , and a resistivity
of 6.9e-07 Ωm. A transverse pulse takes 0.2 s to travel the length
of the wire. Calculate the electrical power dissipated by the wire
while a current of 2 A is passing through the wire.
A coin has one face marked with 1 and the other face marked -1. The coin...
A coin has one face
marked with 1 and the other face marked -1. The coin is tossed four
times. Let X be the sum of four numbers and g(X)=X2.
Determine the
Probability Mass Function (PMF) of X and g(X).
Sketch PMF and CDF for
X.
Sketch PMF and CDF for
g(X).
Evaluate E(X) and
Var(X).
Evaluate E(g(X)) and
Var(g(X)).
Two lamps, one with a thick filament and the other with a thin filament, are connected...
Two lamps, one with a thick filament and the other with a thin
filament, are connected in series. If the filaments are made of the
same material, which lamp has the greater current running through
it?
A.The thick filament.
b.The thin filament.
c.They have the same current.
In the previous question, if the filaments are made of the same
material and are the same length, which has the greatest potential
difference across it?
a.The thick filament.
b.The thin filament.
c.They...
A gas has a volume of 4.00 L at 0 degree Celsius. what final temperature, in...
A gas has a volume of 4.00 L at 0 degree Celsius. what final
temperature, in degrees Celsius, is needed to change the volume of
the gas to each of the following, if n and P do not change?
(a) 1.50 L
(b) 1200 ml
Compare (take the ratio) the rate of heat conduction through a 20.0-cm-thick wall that has an...
Compare (take the ratio) the rate of heat conduction through a
20.0-cm-thick wall that has an area of 10.0 m2 and a thermal
conductivity twice that of glass wool with the rate of heat
conduction through a 0.750-cm-thick window that has an area of 2.00
m2, assuming the same temperature difference across each. Show a
few steps. Qualitatively, explain how you can reduce heat
conduction through a window in winter.
Two infants are in NICU. One has meconium aspiration syndrome (MAS) while the other has an...
Two infants are in NICU. One has meconium aspiration syndrome
(MAS) while the other has an alpha 1- antitrypsin (AAT) deficiency,
which has led to development of sever emphysema. Briefly discuss
the basis behind these tow pathophysiological states. For both
these patients, what is the change in lung compliance and why does
this change occur? Which of these patients would benefit from
artificial surfactant treatment?
a) Assume that you have two AISI 1045 cylindrical samples with two different diameters: one 1 in. thick and the other 2 in. thick.
a) Assume that you have two AISI 1045 cylindrical samples with two different diameters: one 1 in. thick and the other 2 in. thick. You astenitize and quench both samples in water. Then you cut a section and measure the hardness at the center of each sample. Would you expect to get the same results? Explain your answer.
b) Assume that you have two cylindrical steel samples with 1 in. diameter, one made out of AISI 1045 and another...
A brick wall 25cm thick, initially at 80°C has a medium at 15°C suddenly placed in...
A brick wall 25cm thick, initially at 80°C has a medium at 15°C
suddenly placed in conatct with both of its surfaces through a heat
transfer coefficient of 90W/m2°C. Find the temperature at a point
2.5cm from the surafce after 10hrs have elapsed. Find also the heat
that has flowed out of the wall during that time. Take ρ =
1602kg/m3, cp = 0.84kJ/kg°C, k = 0.69W/m°C,and α =
5.2×10-7m2/s.
Two ice skaters, Anne and Steve, face each other while at rest,and then push against...
Two ice skaters, Anne and Steve, face each other while at rest,
and then push against each other's hands. The mass of Steve is
twice that of Anne. How do their speeds compare after they push
off?A.Anne's speed is one-fourth of Steve's speed.B.Anne's speed is two times Steve's speed.C.Anne's speed is the same as Steve's speed.D.Anne's speed is one-half of Steve's speed.E.Anne's speed is four times Steve's speed.
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