Answer:
E = 207 GPa
Explanation:
Young's modulus is given by following equation:
Where and are stress and strain, respectively.
By replacing terms:
The technician should start by checking the temperature rise across the indoor coil.
<h3>Who is a technician?</h3>
This is a person who has skill in a particular area of job. A technician is responsible for repairs and also ensure different equipment and systems are working perfectly.
Hence, the technician should start by checking the temperature rise across the indoor coil.
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Answer:
You forgot the image and or example. I mean the answer could be anything right now.
Answer:690.21 mm of Hg
Explanation:
Given data
depth of lake=237.3m
density of lake water=
acceleration due to gravity=
air above water has a barometric pressure of 29.83in of Hg=711.2 mm of Hg
Altitude correct for pressure=1.87in of Hg=47.5 mm of Hg
Absolute pressure above water =711.2-47.5mm of Hg=663.7 mm of Hg
Absolute pressure at bottom of Lake=Pressure at surface level +
Absolute pressure at bottom of Lake=663.7+
Absolute pressure at bottom of Lake=690.21 mm of Hg
Answer:
Ts = 413.66 K
Explanation:
given data
temperature = 20°C
velocity = 10 m/s
diameter = 5 mm
surface emissivity = 0.95
surrounding temperature = 20°C
heat flux dissipated = 17000 W/m²
to find out
surface temperature
solution
we know that here properties of air at 70°C
k = 0.02881 W/m.K
v = 1.995 × m²/s
Pr = 0.7177
we find here reynolds no for air flow that is
Re =
Re =
Re = 2506
now we use churchill and bernstein relation for nusselt no
Nu = = 0.3 +
h = 0.3 +
h = 148.3 W/m².K
so
q conv = h∈(Ts- T∞ )
17000 = 148.3 ( 0.95) ( Ts - (20 + 273 ))
Ts = 413.66 K