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Crazy boy [7]
3 years ago
14

A. Paleozoic

Engineering
2 answers:
Mashutka [201]3 years ago
7 0
The answer to your question is Cenozoic
garri49 [273]3 years ago
5 0
Pretty sure it’s Cenozoic
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If a hoist lifts a 4500lb load 30ft in 15s, the power delivered to the load is a) 18.00hp b) 9000hp c) 16.36hp d) None of the ab
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Answer:

Explanation:

load = 4500lb                   lift height= 30 ft

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velocity=\frac{30}{15} ft/s

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power={4500}\times2

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2.) A fluid moves in a steady manner between two sections in a flow
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Answer:

250\ \text{lbm/min}

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Explanation:

A_1 = Area of section 1 = 10\ \text{ft}^2

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v_1 = Specific volume at section 1 = 4\ \text{ft}^3/\text{lbm}

\rho = Density of fluid = 0.2\ \text{lb/ft}^3

A_2 = Area of section 2 = 2\ \text{ft}^2

Mass flow rate is given by

m=\rho A_1V_1=\dfrac{A_1V_1}{v_1}\\\Rightarrow m=\dfrac{10\times 100}{4}\\\Rightarrow m=250\ \text{lbm/min}

The mass flow rate through the pipe is 250\ \text{lbm/min}

As the mass flowing through the pipe is conserved we know that the mass flow rate at section 2 will be the same as section 1

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The speed at section 2 is 625\ \text{ft/min}.

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3 years ago
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Explanation:

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