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inessss [21]
3 years ago
6

The benefit of using the generalized enthalpy departure chart prepared by using PR and TR as the parameters instead of P and T i

s that the single chart can be used for all gases instead of a single particular gas.
a. True
b. False
Engineering
1 answer:
Butoxors [25]3 years ago
5 0
The answer is: a. True
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2 years ago
have you ever heard the myth that a penny dropped off the empire state building can be dangerous? the penny would be traveling v
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3 years ago
An escalator handles a steady load of 26 people per minute in elevating them from the first to the second floor through a vertic
photoshop1234 [79]

Answer:

\eta = 70.711\,\%

Explanation:

The power needed to make the escalator working is obtained by means of the Work-Energy Theorem:

\dot W  = \dot U_{g}

\dot W = \dot n \cdot m_{p}\cdot g \cdot \Delta y

\dot W = \left(26\,\frac{persons}{min}\right)\cdot (124\,lbm)\cdot \left(32.174\,\frac{ft}{s^{2}}\right)\cdot \left(\frac{1\,lbf}{32.174\,\frac{lbm\cdot ft}{s^{2}} } \right)\cdot (27.5\,ft)

\dot W = 88660\,\frac{lbf\cdot ft}{min}\,\left(2.687\,hp\right)

The mechanical efficiency of the escalator is:

\eta = \frac{2.687\,hp}{3.8\,hp}\times 100\,\%

\eta = 70.711\,\%

3 0
3 years ago
State three active materials of a lead acid cell​
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Answer:

lead dioxide,sulfate and lead acid

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