How are density, specific weight, and specific gravity related? (in words)
1 answer:
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Answer:
// Scanner class is imported to allow program
// receive input
import java.util.Scanner;
// RomanNumerals class is defined
public class RomanNumerals {
// main method that signify beginning of program execution
public static void main(String args[]) {
// Scanner object scan is created
// it receive input via keyboard
Scanner scan = new Scanner(System.in);
// Prompt is display asking the user to enter number
System.out.println("Enter your number: ");
// the user input is stored at numberOfOrder
int number = scan.nextInt();
// switch statement which takes number as argument
// the switch statement output the correct roman numeral
// depending on user input
switch(number){
case 1:
System.out.println("I");
break;
case 2:
System.out.println("II");
break;
case 3:
System.out.println("III");
break;
case 4:
System.out.println("IV");
break;
case 5:
System.out.println("V");
break;
case 6:
System.out.println("VI");
break;
case 7:
System.out.println("VII");
break;
case 8:
System.out.println("VIII");
break;
case 9:
System.out.println("IX");
break;
case 10:
System.out.println("X");
break;
// this part is executed if user input is not between 1 to 10
default:
System.out.println("Error. Number must be between 1 - 10.");
}
}
}
Explanation:
The program is well commented. A sample image of program output is attached.
The switch statement takes the user input (number) as argument as it goes through each case block in the switch statement and match with the corresponding case to output the roman version of that number. If the number is greater 10 or less than 1; the default block is executed and it display an error message telling the user that number must be between 1 - 10.
Answer:
- The specimen elongates linearly in response to the load to its proportionality limit.
- The specimen undergoes non- elastic deformation to its yield point.
- when stretched beyond its yield point, it deforms plastically until it reaches a maximum stress limit called the Ultimate tensile strength.
- If loaded beyond this, the material begins necking until fracture.
Explanation:
The stress strain curve for a ductile material is shown in the attachment below.
A-B: There is a linear relationship between extension produced to load added. Point B is called the proportionality limit.
B-C: There a non linear extension of a material produced by the material in response to the applied load. Point C is called the Yield point. Beyond this, the material does not return to its original dimensions when the load is removed.
C-D. The material extends to a maximum point D, called the Ultimate tensile stress. Beyond this necking occurs.
D-E. Necking begins until the material finally fractures at point E.
Regions: A-C : Eleastic region
Regions: C-E : Plastic region
Regions: D-E : Necking region
