1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kherson [118]
4 years ago
7

Laboratories containing dangerous materials are often kept at a pressure slightly less than ambient pressure so that contaminant

s can be filtered through an exhaust system rather that leaked through cracks around doors, etc. If the pressure in such a room is 0.1 in. of water below that of the surrounding rooms, with what velocity will air enter the room through an opening? Assume viscous effects are negligible.
Engineering
1 answer:
Westkost [7]4 years ago
7 0

Answer:

The velocity the air will enter the room through an opening is 20.9 \frac{ft}{s}

Explanation:

We have to consider 2 points

Point 1  = Being away from the laboratory door

Point 2 = Gab between the floor and the laboratory door

Using the Bernoulli equation

\frac{p1}{d_a_i_r g} + \frac{V1^{2} }{2g} + z1 =  \frac{p2}{d_a_i_r g} + \frac{V2^{2} }{2g} + z2

Assuming

p1 = patm

p2 = patm + plab

patm will be cancel and both points will be at the ground level

0 = \frac{plab}{d_a_i_r g} + \frac{V2^{2} }{2g}\\ \frac{V2^{2} }{2g} = \sqrt[]{\frac{-2plab}{d_a_i_r} }

d_a_i_r = - у H2O * hH2O

        = \frac{lb}{ft^{3}} * \frac{0.1}{2} ft\\= 0.52 \frac{lb}{ft^{2}}

Substituting the results

V2 = (\frac{- 2 * (- 0.520) \frac{lb}{ft^{2}  } }{2.38 * 10^{-3} \frac{sl}{ft^{3} }  })^{1/2}

V2 = 20.9 \frac{ft}{s}

You might be interested in
Which of the following have the capacity to display formatted data?
sukhopar [10]

Answer:

D.  A and B

Explanation:

1. The method Console.Write() is an overloaded method in a language like C#.

One of its variations could be as follows;

<em>Console.Write(String format, Object a, Object b).</em>

This contains three parameters and will write the text representation of the specified objects to the standard output stream using the information specified by the format specifier. Parameter 1 is <em>format</em> which is a composite format string representing the format specifier. Parameter 2 is <em>a</em>, which is the first object to be written using <em>format. </em>Parameter 3 is b, which is the second object to be written using <em>format</em>.

2. The method Console.WriteLine() has the same characteristics as Console.Write() above, except that it writes the text representation of the specified objects, followed by current line terminator then to the standard output stream using the information specified by the format specifier.

3. Console.WriteFormat() does not exist, at least not in C# or .NET

Therefore, Console.Write() and Console.WriteLine() have the capacity to display formatted data.

<em>Hope this helps!</em>

6 0
3 years ago
.............................................
Akimi4 [234]
....................................
5 0
3 years ago
Which of the following are some of the problems found in city streets?
storchak [24]

Answer: drugs and rushing cars

Explanation: drug dealers are everywhere on city streets nowadays they have been killing young adults

rushing cars or reckless drivers cut curb fast and potentially someone can get hurt they are speeding and not worrying about other people lives at stake

4 0
3 years ago
In a hydroelectric power plant, water enters the turbine nozzles at 800 kPa absolute with a low velocity. If the nozzle outlets
Whitepunk [10]

Answer:

The answer is VN =37.416 m/s

Explanation:

Recall that:

Pressure (atmospheric) = 100 kPa

So. we solve for the maximum velocity (m/s) to which water can be accelerated by the nozzles

Now,

Pabs =Patm + Pgauge = 800 KN/m²

Thus

PT/9.81 + VT²/2g =PN/9.81  + VN²/2g

Here

Acceleration due to gravity = 9.81 m/s

800/9.81 + 0

= 100/9.81 + VN²/19.62

Here,

9.81 * 2= 19.62

Thus,

VN²/19.62 = 700/9.81

So,

VN² =1400

VN =37.416 m/s

Note: (800 - 100) = 700

7 0
3 years ago
Read 2 more answers
Which type of Artificial Intelligence (AI) can repeatedly perform tasks of limited scope?
seraphim [82]

Narrow AI is the type of Artificial Intelligence (AI) can repeatedly perform tasks of limited scope.

  • Natural Language Understanding (NLU) is used to describe extracting information from unstructured text using algorithms.

<h3>What is Narrow AI ?</h3>

This is known to be a form or a type of AI that is said to be able to carry out a dedicated task as a result of its intelligence.

Note that Narrow AI is the type of Artificial Intelligence (AI) can repeatedly perform tasks of limited scope.

  • Natural Language Understanding (NLU) is used to describe extracting information from unstructured text using algorithms.

Learn more about Artificial Intelligence from

brainly.com/question/25523571

#SPJ1

7 0
2 years ago
Other questions:
  • Derive an expression for the axial thrust exerted by a propeller if the thrust depends only on forward speed, angular speed, siz
    6·1 answer
  • The minimum size for overhead service conductors shall not be smaller than ____ AWG copper. A. 4 B. 6 C. 8 D. 10
    13·1 answer
  • What is the most embarrassing thing that has happened to you its OK no judging
    10·2 answers
  • Which one of the following statements belt batter boards is correct
    15·2 answers
  • State 3 advantages and 3 disadvantages of unit rate contract​
    10·1 answer
  • When an object is plumb, it is _____.
    11·2 answers
  • Which option identifies what would be best to use to illustrate Pablo’s ideas in the following scenario?
    14·1 answer
  • A countinous shot that sense, flows well, and is understanable and pleasant to look at
    13·1 answer
  • Construction support involves mostly what kind of work?
    12·1 answer
  • What is Electrical resistance welding basic principles
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!