The heat flux that is applied to one face of a plane wall is q " = 20 W / m 2 . The opposite face is exposed to air at temperature 30 ° C, with a convection heat transfer coefficient of 20 W/m 2 ⋅ K . The surface temperature of the wall exposed to air is measured and found to be 50 ° C . Do steady-state conditions exist? If not, is the temperature of the wall increasing or decreasing with time?
The heat flux that is applied to one face of a plane wall is q " = 20 W / m 2 . The opposite face is exposed to air at temperature 30 ° C, with a convection heat transfer coefficient of 20 W/m 2 ⋅ K . The surface temperature of the wall exposed to air is measured and found to be 50 ° C . Do steady-state conditions exist? If not, is the temperature of the wall increasing or decreasing with time?
Solution Summary: The author explains that the steady state does not exist and the temperature of wall decreases with time.
The heat flux that is applied to one face of a plane wall is
q
"
=
20
W
/
m
2
.
The opposite face is exposed to air at temperature
30
°
C,
with a convection heat transfer coefficient of
20
W/m
2
⋅
K
.
The surface temperature of the wall exposed to air is measured and found to be
50
°
C
.
Do steady-state conditions exist? If not, is the temperature of the wall increasing or decreasing with time?
Q11. Determine the magnitude of the reaction force at C.
1.5 m
a)
4 KN
D
b)
6.5 kN
c)
8 kN
d)
e)
11.3 KN
20 kN
-1.5 m-
C
4 kN
-1.5 m
B
Mechanical engineering, No
Chatgpt.
please help with this practice problem(not a graded assignment, this is a practice exam), and please explain how to use sohcahtoa
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