Consider the following steady, two-dimensional, incompressible velocity field: V → = ( u , v ) = ( − a x 2 ) i → + ( 2 a x y ) j → , where a is a constant. Calculate the pressure as a function of x and y .
Consider the following steady, two-dimensional, incompressible velocity field: V → = ( u , v ) = ( − a x 2 ) i → + ( 2 a x y ) j → , where a is a constant. Calculate the pressure as a function of x and y .
Consider the following steady, two-dimensional, incompressible velocity field:
V
→
=
(
u
,
v
)
=
(
−
a
x
2
)
i
→
+
(
2
a
x
y
)
j
→
, where a is a constant. Calculate the pressure as a function of
x
and
y
.
Find the resultant force vector from adding F1, F2 and F3, where … F1 = {-8i+10j-32k} N F2 is 40 N in magnitude with coordinate direction angles α, β, and γ, of 45, 120 and 60 degrees, respectively and F3 is 22 N in magnitude with transverse and azimuth angles of 65 and 40 degrees, respectively Express your final answer as a Cartesian vector as well as a magnitude with angles.
A 2-kW resistance heater wire with thermal conductivity of k=20 W/mK, a diameter of D=4mm, and a length of L=0.9m is used to boil water. If the outer surface temp of the resistance wire is Ts=110 degrees C, determine the temp at the center of the wire.
A flat-plate solar collector is used to heat water by having water flow through tubes attached at the back of the thin solar absorber plate. The absorber plate has emmisssivity and an absorptivity of 0.9. The top surface where x=0 temp of the absorber is T0=35 degrees C, and solar radiation is incident on the basorber at 500 W/m^2 with a surrounding temp of 0 degrees C. The convection heat transfer coefficient at the absorber surface is 5 W/m^2 K, while the ambient temp is 25 degrees C. Show that the variation of the temp in the basorber plate can be expressed as T(x)=-(q0/k)x+T0, and determine net heat flux, q, absorbed by solar collector.
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