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Anestetic [448]

3 years ago

13

What are the Three L's of Railroad Safety?

1 answer:

sveticcg [70]3 years ago

8 0

Answer:

Remember to cross train tracks ONLY at designated pedestrian or roadway crossings, and obey all warning signs and signals posted there. Stay alert around railroad tracks. Refrain from texting, headphones or other distractions that would prevent you from hearing an approaching train; never mix rails and recreation.

Explanation:

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Designating a standard part is an example of a use for _______ notes.

Y_Kistochka [10]

Answer:

standard references

Explanation:

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3 years ago

A fluid flows through a 10-mm diameter tube at a Reynolds number of 1800. If the flow rate is 6.0 liters/min, what is the head l

Eddi Din [679]

Answer:

29.31 m

Explanation:

It is given that flow rate Q =6.0 ltrs/minute $=\frac{6}{1000\times 60}$ $m^3/sec$

Diameter =10 mm

So radius = $\frac{10}{2}=5 mm=5\times 10^{-3}m$

Area of duct $A=\pi r^2=3.14\times(5\times 10^{-3})^2=7.854 \times 10^{-5}m^2$

Average velocity $v=\frac{Q}{A}=\frac{10^{-4}}{7.854\times 10^{-5}}=1.372 m/sec$

The given Reynolds number is 1800 which is less than 2000 so it will be a laminar flow

So Reynolds number friction factor $f=\frac{64}{1800}=0.0356$

So head loss ifs given by $\frac{fLv_{avg}^2}{d\times 2\times g}=\frac{0.0356\times 100\times 1.732^2}{10\times 10^{-3}\times 2\times 9.81}=29.39\ m$

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3 years ago

आर्किटेक्ट ईन्जिनियरले भवन वा दरबार आदिको निर्माण गर्दा विशेष ध्यान दिने ३ वटा पक्षहरुको नाम लेख।

Varvara68 [4.7K]

Answer:

Explanation:

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3 years ago

After testing a model of a fuel-efficient vehicle, scientists build a full-sized vehicle with improved fuel efficiency. Which st

Mazyrski [523]

B evaluate the solution. Sorry if I'm wrong.

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3 years ago

What are the common approximations made in the analysis of heat exchangers?

Oksanka [162]

Answer: making sure that they are up to date

Explanation:

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3 years ago