Answer:
Heat loss per unit length of pipe = q' = 1363.47 W/m
Explanation:
Heat loss per unit length would be in terms of W/m.
Assumptions:
• steady-state conditions
• negligible steam side convection resistance, pipe wall resistance and contact resistance (T1 = 450 K)
• constant properties
The thermal conductivity for concrete must be found.
Referring to the table of thermal conductivity of some common materials, the value for stone concrete will be used, which is 1.7.
The heat rate can be expressed as:
q = SkΔT₁₋₂ = Sk(T₁ − T₂)
The proper shape factor is needed for the solution and is found from the list of shape factors. The shape factor must be for a circular cylinder of length L centered in a square solid of equal length and is:
S = 2πL ÷ [ln (1.08w/D)
]
Then,
q' =
q ÷ L
The full equation is:
q' =
2πk(T₁ − T₂) ÷ [ln (1.08w/D)
]
Substituting known values:
q' =
2π(1.7 W/mK)*(450 K − 300 K) ÷ [ln [1.08(1.5 m)/0.5 m]
]
q' = 1363.47 W/m
Technician B.
Explanation:
The starter motor is what turns the engine, until enough electricity is generated with momentum to keep the engine running and cycling. If there is a problem with the immobilizer, the engine may shake or come off the mount at higher RPMs, however, will not have any problems initially starting the engine. The starter is most important for starting the engine, therefore, Technician B is correct In this case.
Answer:
the pressure reading when connected a pressure gauge is 543.44 kPa
Explanation:
Given data
tank volume (V) = 400 L i.e 0.4 m³
temperature (T) = 25°C i.e. 25°C + 273 = 298 K
air mass (m) = 3 kg
atmospheric pressure = 98 kPa
To find out
pressure reading
Solution
we have find out pressure reading by gauge pressure
i.e. gauge pressure = absolute pressure - atmospheric pressure
first we find absolute pressure (p) by the ideal gas condition
i.e pV = mRT
p = mRT / V
p = ( 3 × 0.287 × 298 ) / 0.4
p = 641.44 kPa
so
gauge pressure = absolute pressure - atmospheric pressure
gauge pressure = 641.44 - 98
gauge pressure = 543.44 kPa
Less, if it’s too big: hard to control and maneuverability for shooting wouldn’t be that good. a smaller wheelchair allows for faster movement and control, along with easier shooting and upper body movement
Answer:
One of the differences is that civil engineering focuses on design elements while structural engineering is more concern on inspecting the materials used for construction. The structural engineers are the one who are supposed to ensure that the materials used for construction can support the design of the structure.
Explanation:
