The electrical panel schedules are located on EWR Plan number __

Suppose the Bookstore is processing an input file containing the titles of books in order to remove duplicates from their list.

mash [69]

Answer:

books = []

fp = open("bookTitles.txt")

for line in fp.readlines():

title = line.strip()

if title not in books:

books.append(title)

fp.close()

fout = open("noDuplicates.txt", "w")

for title in books:

print(tile, file=fout)

fout.close()

except FileNotFoundError:

print("Unable to open bookTitles.txt")

6 0

3 years ago

A pressure cylinder has an outer diameter 200 mm, maximum external pressure 4 MPa, and maximum allowable shear stress 27.5 MPa.

ludmilkaskok [199]

Answer:

The minimum value of wall thickness t=3.63 mm.

Explanation:

Given:

D=200 mm

P=4 MPa

t= Wall thickness

maximum shear stress=27.5 MPa

We know that

hoop stress $\sigma _{h}=\frac{Pd}{2t}$

Longitudinal stress $\sigma _{l}=\frac{Pd}{4t}$

So maximum shear tress in plane $\tau _{max}=\dfrac{\sigma _h-\sigma _l}{2}$

$\tau _{max}=\dfrac{Pd}{8t}$

Now by putting the value

$27.5=\dfrac{4\times 200}{8t}$

So t=3.36 mm

The minimum value of wall thickness t=3.63 mm.

4 0

3 years ago

java Write a program that simulates tossing a coin. Prompt the user for how many times to toss the coin. Code a method with no p

max2010maxim [7]

Answer:

The solution code is written in Java.

public class Main {
public static void main(String[] args) {
Scanner inNum = new Scanner(System.in);
System.out.print("Enter number of toss: ");
int num = inNum.nextInt();
for(int i=0; i < num; i++){
System.out.println(toss());
}
}
public static String toss(){
String option[] = {"heads", "tails"};
Random rand = new Random();
return option[rand.nextInt(2)];
}
}

Explanation:

Firstly, we create a function toss() with no parameter but will return a string (Line 14). Within the function body, create an option array with two elements, "heads" and "tails" (Line 15). Next create a Random object (Line 16) and use nextInt() method to get random value either 0 or 1. Please note we need to pass the value of 2 into nextInx() method to ensure the random value generated is either 0 or 1. We use this generate random value as an index of option array and return either "heads" or "tails" as output (Line 17).

In the main program, we create Scanner object and use it to prompt user to input an number for how many times to toss the coin (Line 6 - 7). Next, we use the input num to control how many times a for loop should run (Line 9). In each round of the loop, call the function toss() and print the output to terminal (Line 10).

4 0

3 years ago

Read 2 more answers

A 3.5-m3 rigid tank initially contains air whose density is 2 kg/m3 . The tank is connected to a high-pressure supply line throu

Mumz [18]

Answer:

Explanation:

First, we find the mass of the air originally in the tank.

Density is given as mass divided by volume. It is given as:

$Density = \frac{mass}{volume}$