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diamong [38]
4 years ago
11

The temperature at which all molecular motion stops is known as: a) Absolute temperature b) molecular temperature c) absolute ze

ro d) Molecular zero e) none of these.
Engineering
1 answer:
Naya [18.7K]4 years ago
6 0

Answer:

c) absolute zero

Explanation:

The fourth principle of thermodynamics posed by the Romanian economist Nicholas Georgescu-Roegen, explains the presence of absolute zero is said that at this temperature the internal molecular movement becomes zero making the internal energy (U) zero, absolute zero is equivalent to -273.15C or 0Kelvin

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Answer: its c

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A liquid with a specific gravity of 2.6 and a viscosity of 2.0 cP flows through a smooth pipe of unknown diameter, resulting in
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Where the inertial/ convective term is dominant?
const2013 [10]

Answer:

The inertial or convection term is dominant in the laminar regime. Generally, the laminar flow occur when the fluid is viscous and when it is moving very slowly.

Laminar regime is characterized by the low momentum convection and the high momentum diffusion.

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3 years ago
A liquid refrigerant (sg=1,2) is flowing at a weight flow rate of 20,9 N/h. Refrigerant flashes into a vapor and its specific we
Iteru [2.4K]

Answer:

Explanation:

volume of 20.9 N

= 20.9 / 11.5 m³

= 1.8174 m³

In one hour 1.8174 m³ flows

in one second volume flowing = 1.8174 / 60 x 60

= 5 x 10⁻⁴ m³

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5 0
3 years ago
A second order system is to be subjected to inputs below 80Hz and is to operate with an amplitude response of ±5 percent. Calcul
NeTakaya

Answer:

So natural frequency will be 958.9616 rad/sec    

Explanation:

We have given amplitude response  \pm 5 %

Damped frequency f =80 Hz

So  \omega _d=2\pi\ f=2\times 3.14\times 80=502.4rad/sec

So e^{\frac{-\pi \zeta }{\sqrt{1-\zeta ^2}}}=0.05

We know that \zeta =cos\Theta

So \sqrt{1-\zeta ^2}=sin\Theta

So e^{-\pi cot\Theta }=0.05

{-\pi cot\Theta }=-3

cot\Theta =0.954

\Theta =46.34

cos\Theta =\zeta =0.690

Now we know that \omega _d=\omega _n\sqrt{1-\zeta ^2}

\omega _n=\frac{\omega _d}{\sqrt{1-\zeta ^2}}=\frac{502.4}{\sqrt{1-0.690^2}}=958.9616rad/sec

So natural frequency will be 958.9616 rad/sec

5 0
4 years ago
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