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Chris

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  • Set alarm clock for certain date at certain time on a mobile device?

    I used to have a BlackBerry Bold 9780 that had this feature but that quit working. I now have an iPod Touch 4th Generation or a Samsung Exhibit II 4G that I would like to have an alarm clock app that can be set for future dates. For example, let's say that I have the following schedule:

    Date: Wake up time:

    Monday 23 April 2012 6AM

    Tuesday 24 April 2012 6:30AM

    Wednesday 25 April 2012 6:15 AM

    Thursday, 26 April 2012 None

    Friday, 27 April 2012 None

    Saturday, 28 April 2012 7AM

    Monday, 30 April 2012 6:45 AM

    and so on, where the alarm time would change based on the day. I would like to set the schedule in advance (likely around a week in advance). Does anyone know of any app that will do this? I have found many alarm apps that allow you to set it to alarm on the next day, or every Monday at the same time, for example, but none that allow for this functionality. If you know of any, I will be very grateful.

    Thanks!

    3 AnswersPDAs & Handhelds9 years ago
  • Output Voltage, AC Source?

    The rms output voltage of an AC source is 230 V, and the operating frequency is 140 Hz. Write the equation giving the output voltage as a function of time t. (Use t as necessary.)

    I have (325.2691193)*sin(879.645943*t) as my final answer, but I was told that I was incorrect. Does anyone have any suggestions?

    1 AnswerPhysics1 decade ago
  • How to Find Impulse Magnitude?

    A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a

    vertical wall. The particle rebounds with a speed of 3.0 m/s. What is the magnitude of

    the impulse delivered to the particle?

    I know that the answer should be 32 N*s, but I don't know how to get this answer.

    2 AnswersPhysics1 decade ago
  • Kinetic Energy of a 2 mass system?

    An 8.0-kg object moving 4.0 m/s in the positive x direction has a one-dimensional collision

    with a 2.0-kg object moving 3.0 m/s in the opposite direction. The final velocity of the

    8.0-kg object is 2.0 m/s in the positive x direction. What is the total kinetic energy of the

    two-mass system after the collision?

    The correct answer should be 41J, but I don't know how to arrive at this answer.

    2 AnswersPhysics1 decade ago
  • Java problem - The method (method) is undefined?

    Hello All,

    I have some Java code that I'm having some issues with that I can't seem to figure out, and I'm hoping that someone could help me. I have 3 classes that 'talk' to each other. I'm having issues with getting an error about " The method Circle(double, double, double) is undefined for the type Circle" I'm sure that I'll feel stupid after you tell me what the problem is, but I just don't see it. I'm posting my code below. Thanks for your assistance!

    ______________________________________________________________

    package circle;

    import java.util.Scanner;

    public class Main extends Circle {

    /**

    * @param args

    */

    public void main(String[] args) {

    Scanner noScanner = new Scanner (System.in);

    double x= 5;

    double y= 9;

    double r=10;

    System.out.print("Please enter a value for X: ");

    x = noScanner.nextDouble();

    System.out.print("Please enter a value for Y: ");

    y = noScanner.nextDouble();

    System.out.print("Please enter a value for radius: ");

    r = noScanner.nextDouble();

    noScanner.close();

    super.Circle(x,y,r); //THIS LINE THROWS THE ERROR.

    System.out.println("For circle with specifications of: " + super.toString());

    System.out.println("The area is: " + super.getArea() );

    System.out.println("The area is: " + super.getCircumference() );

    }

    }

    _________________________________________________________________________________

    package circle; //Folder for Circle class.

    import point.Point;

    public class Circle extends Point

    {

    private double radius; // The center of Circle object is

    // inherited from Point as the x and y

    // coordinates. Add a double

    // radius field.

    public Circle()

    {

    super(0,0); //call Point's constructor initializing center to (0,0)

    radius = 0.0; //set radius to 0.0

    }

    public Circle(double x, double y, double r)

    {

    super(x,y); //set center to (x,y)

    radius = r; //set radius to r

    }

    public double r()

    {

    return radius; //returns radius

    }

    public double getArea()

    {

    return(Math.PI*radius*radius); //returns area of Circle object

    }

    public double getCircumference()

    {

    return (radius*2*Math.PI); //returns circumference of Circle object

    }

    public String toString()

    {

    return("Center: ("+ x()+ "," + y() + ") " + "Radius: " + r());

    }

    }

    3 AnswersProgramming & Design1 decade ago