2.16 (Science:
calculating energy) Write a program that calculates the energy
needed to heat water from an initial temperature to a final temperature. Your
program should prompt the user to enter the amount of water in kilograms and
the initial and final temperatures of the water. The formula to compute the
energy is Q = M * (final temperature – initial temperature) * 4184
where M is the
weight of water in kilograms, temperatures are in degrees Celsius, and energy Q is
measured in joules.
Code :
File name-CalculatingEnergy.java
import java.util.*;
import javax.swing.*;
public class CalculatingEnergy
{
public static void main (String arg[]){
double energy, weight, initialTemp,
finalTemp, calculatEnergy;
Scanner input =new Scanner(System.in);
System.out.print("Enter Weight of
water in kilogram: = ");
weight =input.nextDouble();
System.out.print("Enter initual
tempereture in celsius: = ");
initialTemp =input.nextDouble();
System.out.print("Enter final
tempereture in celsius: = ");
finalTemp =input.nextDouble();
calculatEnergy =
weight*(finalTemp-initialTemp)*4184;
System.out.print("The energy
needed is: = "+calculatEnergy);
}
}
