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FinnZ [79.3K]
2 years ago
4

It is required to dewater a construction site of 80 m by 80 m. The bottom of the construction will be 1.5 m below the initial wa

ter surface elevation of 90 m. Four pumps are to be used in 0.5-m diameter wells at the four corners of the site. The aquifer has a transmissivity of 1600 m^2/d and a storage coefficient of 0.10. The site needs to be ready after one month of pumping.
Required:
a. Determine the required pumping rate.
b. If the site is to be ready after one month of pumping, determine the pumping rate.
Engineering
1 answer:
guajiro [1.7K]2 years ago
5 0

Answer:

ndebjwj12i1828eyshjakaka

Explanation:

znsjjsn see 28288w7zyqoq00woqkznzjaa

You might be interested in
Your Java program will be reading input from a file name strInput.txt. Each record contains String firstname String lastName Str
stiks02 [169]

Answer:

The program requires that you have the specified input files and it reads from each file at a time and processes salary in digits, states the city, state and bonus with respective first and last name as requested in the question. Note that you must have access to the mentioned output files for the program to work properly. Below is the java version of the program.

import java.io.File;

import java.io.FileNotFoundException;

import java.io.PrintWriter;

import java.util.Scanner;

class Driver

{

public static void main(String[] args) throws FileNotFoundException

{

Scanner sc = new Scanner(new File("strInput.txt"));

PrintWriter pd = new PrintWriter(new File("strOutputD"));

PrintWriter prf = new PrintWriter(new File("strOutputRF"));

String firstname = "", lastname = "", strSalary = "", status = "", cityState = "", city = "", state = "";

double salary = 0, bonus = 0;

int incorrectRecords = 0;

int dRecords = 0;

int fRecords = 0;

while(sc.hasNextLine())

{

firstname = sc.next();

lastname = sc.next();

strSalary = sc.next();

status = sc.next();

cityState = sc.next();

if(!status.equals("D") && !status.equals("F"))

{

System.out.println("Records is neither D nor F. Skipping this...");

incorrectRecords++;

continue;

}

else if(status.equals("D") || status.equals("F"))

{

char c = ' ';

int i = 0;

for(i=0; i<strSalary.length() && c != '.'; i++)

{

c = strSalary.charAt(i);

if(!Character.isDigit(c))

{

System.out.println("Char at position " + (i+1) + " in salary is not a digit");

incorrectRecords++;

continue;

}

}

if(c == '.')

{

if(i+1 == strSalary.length()-1)

{

if(!Character.isDigit(strSalary.charAt(i)))

{

System.out.println("Char at position " + (i+1) + " in salary is not a digit");

incorrectRecords++;

continue;

}

if(!Character.isDigit(strSalary.charAt(i+1)))

{

System.out.println("Char at position " + (i+1+1) + " in salary is not a digit");

incorrectRecords++;

continue;

}

}

else

{

System.out.println("Period is in the wrong position. Expected at " + (strSalary.length()-3) + " but found at " + (i+1));

continue;

}

}

city = cityState.split(",")[0];

state = cityState.split(",")[1];

salary = Double.parseDouble(strSalary);

if(status.equals("D"))

{

bonus = salary * 0.125;

dRecords++;

pd.write(firstname + " " + lastname + " " + status + " " + salary + " " + bonus + " " + city + " " + state);

}

else

{

bonus = salary * 0.18;

fRecords++;

prf.write(firstname + " " + lastname + " " + status + " " + salary + " " + bonus + " " + city + " " + state);

}

}

}

System.out.println("No of D records : " + dRecords);

System.out.println("No of F records : " + fRecords);

System.out.println("No of incorrect records : " + incorrectRecords);

}

}

6 0
2 years ago
. Write a program that computes and displays a 15 percent tip when the price of a meal is input by the user. (Hint: the tip is c
Eddi Din [679]

Answer:

Explanation:

// The solution is solved using c++

#include <iostream>

using namespace std;

int main ()

{

 float meal;

 cout << "Please enter the price of the meal: ";

 cin >> meal;

 cout << "The Tip for the meal is " << 0.15*meal;

 cout << " The tip for the meal  " << 0.15* meal  << ".\n";

 return 0;

}

3 0
2 years ago
An airplane is flying at an altitude of 10,500 m. Determine the gage pressure at the stagnation point on the nose of the plane i
Alenkasestr [34]

Answer:

gauge pressure at stagnation point is 1836.07  pa, the flow will be compressible at 1050 km/h.

Explanation:

The airplane is flying at a velocity of 350 km/hr. Then assume that air is also flowing at a speed of 350 km/hr  The point at which velocity of flow of fluid is zero at that point kinetic energy of the fluid is converted into pressure head, that pressure head is called stagnation pressure.

Applying Bernoulli's equation between points (1) and (2), we can get:

((pressure head + velocity head + datum head))_{1} = ((pressure head + velocity head + datum head))_{2}

\frac{P_{1} }{gρ} +\frac{V^{1} }{2g}  + Z_{1} = \frac{P_{2} }{gρ} +\frac{V^{2} }{2g}  + Z_{2}

A both points (1) and (2) are on the same level;

  • Z_{1} = Z_{2}
  • Velocity of air at point (2), V_{2} = 0

from the properties of air table: Density of air at  10500 m is 0.3885 \frac{kg}{m^{3} }

\frac{P_{1} }{gρ} +\frac{V^{1} }{2g}  + Z_{1} = \frac{P_{2} }{gρ}

\frac{P_{2}-P_{1}  }{2g} =  \frac{V_{1}^{2}}{2g}

\frac{P_{2} - P_{1}}{ρg} = [tex]\frac{1}{2} V_{1}^{2}ρ [/tex]

\frac{P_{2} - P_{1}}= \frac{1}{2} x [tex]97.222^{2} x0.3885

\frac{P_{2} - P_{1}} = 1836.07 [tex]pa

At stagnation point, the gauge pressure = 1836.07 pa

If the airplane speed is increased to 1050 km/h(this is about 3 time the initial speed), the flow will be considered compressible because at low speed gases are considered to be incompressible.

6 0
2 years ago
A single Gates Rubber V belt is to be selected to deliver engine power to the wheel-drive transmission of a riding tractor. A 5-
beks73 [17]

Answer:

Hello there, please check step by step explanations to get answers.

Explanation:

Given that:

5-hp single-cylinder engine is used. At most, the belt transmits 60 percent of this power. The driving sheave has a diameter of 6.2 in. and the driven, 12.0 in. The belt selected should be as close to 92 in pitch length as possible. The engine speed is governor-controlled to a maximum of 3100 rev/min. Select a satisfactory belt, and specify it using the standard designation.

See attached documents for clearity and step by step procedure to answer

7 0
2 years ago
The voltage and current at the terminals of the circuit element in Fig. 1.5 are zero fort &lt; 0. Fort 2 0 they areV =75 ~75e-10
masya89 [10]

Answer:

maximum value of the power delivered to the circuit =3.75W

energy delivered to the element = 3750e^{ -IOOOt} - 7000e ^{-2OOOt} -3750

Explanation:

V =75 - 75e-1000t V

l = 50e -IOOOt mA

power = IV = 50 * 10^-3 e -IOOOt * (75 - 75e-1000t)

=50 * 10^-3 e -IOOOt *75 (1 - e-1000t)

=

maximum value of the power delivered to the circuit =3.75W

the total energy delivered to the element = \int\limits^t_0  {3.75(e^{ -IOOOt} - e ^{-2OOOt} )} , dx \\\\

3750e^{ -IOOOt} - 7000e ^{-2OOOt} -3750

5 0
2 years ago
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