/*
 * [Bath.java]
 *
 * Summary: calculate how long it takes for a hot water heater to heat water.
 *
 * Copyright: (c) 2009-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2010-12-05 initial version
 */
package com.mindprod.test;

import static java.lang.System.*;

/**
 * calculate how long it takes for a hot water heater to heat water.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2010-12-05 initial version
 * @since 2010-12-05
 */
public class Bath
    {
    /**
     * calculate how long it takes for a hot water heater to heat water
     *
     * @param args [0] rating of hot water heater in watts.
     *             [1] US gallons of water to heat
     *             [2] degrees Fahrenheit to heat water to
     */
    public static void main( String[] args )
        {
        final double watts = Double.parseDouble( args[ 0 ] ); // rating of heater in watts
        final double g = Double.parseDouble( args[ 1 ] ); // us gallons
        final double f = Double.parseDouble( args[ 2 ] ); // temp of water in degrees F
        final double c = ( f - 32 ) * 5. / 9.;  // temp of water C , also rise from 0
        final double l = g * 3.78541178; // liters
        final double kcal = c * l; // kcal
        final double kj = kcal * 4.1867999409; // kjoules
        final double seconds = kj * 1000 / watts;
        final double minutes = seconds / 60;
        out.println( "watts:" + watts + " g:" + g + " f:" + f );
        out.println( "c:" + c + " l:" + l + " kj:" + kj );
        out.println( "minutes:" + minutes + " seconds:" + seconds );
        }
    }