Answer:
116 ft/s
Explanation:
D = 0.10x² – 3.00x + 22.0
1019.50 = 0.10x² – 3.00x + 22.0
0 = 0.10x² – 3.00x – 997.5
0 = x² – 30x – 9975
Solve with quadratic formula:
x = [ -(-30) ± √((-30)² − 4(1)(-9975)) ] / 2(1)
x = [ 30 ± √(900 + 39900) ] / 2
x = (30 ± 20√102) / 2
x = 15 ± 10√102
x ≈ 116
Answer:
your answer is correct
Explanation:
You have the correct mapping from inputs to outputs. The only thing your teacher may disagree with is the ordering of your inputs. They might be written more conventionally as ...
A B Y
0 0 1
0 1 0
1 0 0
1 1 1
That is, your teacher may be looking for the pattern 1001 in the last column without paying attention to what you have written in column B.
Answer:
c)kinematic viscosity
Explanation:
In general, the viscosity can be understood as the resistance that a fluid has to flow when sliding one sheet over another. Kinematic viscosity, this name receives it because its units only depend on kinematic units (m / s ^ 2) and not physical properties such as mass.
Answer:
Please find attached file for complete answer solution and explanation of same question.
Explanation:
Answer:
(b)False
Explanation:
Given:
Prandtl number(Pr) =1000.
We know that ![Pr=\dfrac{\nu }{\alpha }](https://tex.z-dn.net/?f=Pr%3D%5Cdfrac%7B%5Cnu%20%7D%7B%5Calpha%20%7D)
Where
is the molecular diffusivity of momentum
is the molecular diffusivity of heat.
Prandtl number(Pr) can also be defined as
![Pr=\left (\dfrac{\delta }{\delta _t}\right )^3](https://tex.z-dn.net/?f=Pr%3D%5Cleft%20%28%5Cdfrac%7B%5Cdelta%20%7D%7B%5Cdelta%20_t%7D%5Cright%20%29%5E3)
Where
is the hydrodynamic boundary layer thickness and
is the thermal boundary layer thickness.
So if Pr>1 then hydrodynamic boundary layer thickness will be greater than thermal boundary layer thickness.
In given question Pr>1 so hydrodynamic boundary layer thickness will be greater than thermal boundary layer thickness.
So hydrodynamic layer will be thicker than the thermal boundary layer.