1) Plastics that soften when heated,harden when cooled, and then can be heated and softened many times

A hydraulic jump is formed in a 4m wide outlet just downstream of a control gate, which is located at the upstream end of the ou

cupoosta [38]

Answer:

Width w = 4m

Glow depth = y1 = 20m

Outlet discharge = 40m

V1= velocity of flow = 40/20*4 = 1/2 = 0.5m/s

Froud number = v1/√gy1

= 0.5/√9.81x20 = 0.0356

1. Y2/20 = 1/2[-1+√1+8*(0.0356)²]

Y2 = 0.05

2. Energy loss in the jump = (20-0.05)²/4x20x0.05

= 1985m

7 0

3 years ago

For a bronze alloy, the stress at which plastic deformation begins is 297 MPa and the modulus of elasticity is 113 GPa. (a) What

Alenkinab [10]

Answer:

a) 93.852 kN

b) 128.043 mm

Explanation:

Stress is load over section:

σ = P / A

If plastic deformation begins with a stress of 297 MPa, the maximum load before plastic deformation will be:

P = σ * A

316 mm^2 = 3.16*10^-4

P = 297*10^6 * 3.16*10^-4 = 93852 N = 93.852 kN

The stiffness of the specimen is:

k = E * A / l

k = 113*10^9 * 3.16*10^-4 / 0.128 = 279 MN/m

Hooke's law:

x' = x0 * (1 + P/k)

x' = 0.128 * (1 + 93.852*10^3 / 279*10^6) = 0.128043 m = 128.043 mm

5 0

3 years ago

Draw the logic circuit for each of the following. For each gate, determine if it generates either EVEN or ODD parity bit and fin

omeli [17]

Answer:

a) 4-input XOR, input data-1001 = 0 Even parity Bit

b) 5-input XOR, input data-10010 = 0 Even parity Bit

c) 6-input XOR, input data-101001 = 1 Even parity Bit

d) 7-input XOR, input data 1011011 = 1 Even parity Bit

Explanation:

a) 4-input XOR, input data-1001 ; generates 0 Even parity Bit

b) 5-input XOR, input data-10010 ; generates 0 Even parity Bit

c) 6-input XOR, input data-101001 ; generates 1 Even parity Bit

d) 7-input XOR, input data 1011011 ; generates 1 Even parity Bit

Attached below is the Logic circuits of the data inputs

8 0

3 years ago

Assume we have already defined a variable of type String called password with the following line of code: password' can have any

omeli [17]

Answer:

The Java code is given below with appropriate comments for better understanding

Explanation:

import java.util.Scanner;

public class ValidatePassword {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.print("Enter a password: ");

String password = input.nextLine();

int count = chkPswd(password);

if (count >= 3)

System.out.println("Secure");

else

System.out.println("Not Secure");

}

public static int chkPswd(String pwd) {

int count = 0;

if (checkForSpecial(pwd))

count++;

if (checkForUpperCasae(pwd))

count++;

if (checkForLowerCasae(pwd))

count++;

if (checkForDigit(pwd))

count++;

return count;

}

// checks if password has 8 characters

public static boolean checkCharCount(String pwd) {

return pwd.length() >= 7;

}

// checks if password has checkForUpperCasae

public static boolean checkForUpperCasae(String pwd) {

for (int i = 0; i < pwd.length(); i++)

if (Character.isLetter(pwd.charAt(i)) && Character.isUpperCase(pwd.charAt(i)))

return true;

return false;

}

public static boolean checkForLowerCasae(String pwd) {

for (int i = 0; i < pwd.length(); i++)

if (Character.isLetter(pwd.charAt(i)) && Character.isLowerCase(pwd.charAt(i)))

return true;

return false;

}

// checks if password contains digit

public static boolean checkForDigit(String pwd) {

for (int i = 0; i < pwd.length(); i++)

if (Character.isDigit(pwd.charAt(i)))

return true;

return false;

}

// checks if password has special char

public static boolean checkForSpecial(String pwd) {

String spl = "[email protected]#$%^&*(";

for (int i = 0; i < pwd.length(); i++)

if (spl.contains(pwd.charAt(i) + ""))

return true;

return false;

}

5 0

3 years ago

A market research survey has 15 questions and will be sent to 500 people. What is the total cost to conduct survey if it has a $

Dimas [21]

Answer:

$39,500

Explanation:

In order to find the total cost, we proceed as follows:

1)

First, the base fee is:

$b=\$1000$

2)

Then we calculate the total number of questions: we have 15 questions per survey, and a total of 500 surveys (for 500 people), therefore the total number of questions is

$Q=15\cdot 500 =7500$

Since the cost is $5 per question, the total cost of the questions is

$q=\$5\cdot 7500 =\$37,500$

3)

Finally, we have 500 persons, and there is a cost of $2 per each person, so the cost due to this is

$p=\$2\cdot 500 = \$1000$

Therefore, the total cost is:

$T=b+q+p=1000+37,500+1000=\$39,500$

8 0

4 years ago