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Studentka2010 [4]
3 years ago
6

A computer scientist from the 1960's who developed the mouse, computer networking, and used a small musical keyboard to control

an early personal computer.
Computers and Technology
1 answer:
PIT_PIT [208]3 years ago
7 0
Steve Jobs im pretty sure
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Why we can not see objects around us in the dark​
malfutka [58]

Answer:

We see an object when light falls on it and gets reflected from its surface and enters our eyes. In a dark room, there is no source of light. no light falls on the surface of objects and we do not see them. This is why we cannot see the objects in a dark room.

4 0
3 years ago
Write IF() function for student 3, If total mark is greater than 10 then print
Debora [2.8K]

Answer:

Explanation:

The following code is written in Java. The if() function is actually called an if statement. The following code can be copied and pasted where you need as long as it is within the scope of the mark variable in order to call it and compare it to 10

if (mark > 10){

           System.out.println("you have scored good");  

       } else {

           System.out.println("you need to improve ");

       }

3 0
3 years ago
How might your use of computers and knowledge of technology systems affect your personal and professional success?
Xelga [282]
Amost all professions include theuse of computers. Knowing a lot about them and the way they work could help you use them when needed in a work environment. It would also make an employer more likely to hire you.
6 0
3 years ago
Read 2 more answers
A keyboard, mouse, and microphone are examples of ________.
kykrilka [37]

Answer:

A keyboard, mouse, and microphone all are examples of <u>peripheral devices.</u>

Explanation:

hope this helps

5 0
2 years ago
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The Speed of Sound (Java Project. Please make it easy to understand. I'm a beginner at this. I believe we are supposed to use a
Ilya [14]

Answer:

The program of this question can be given as:

Program:

//import pacakge for user input.

import java.util.Scanner;

//define class  

public class SpeedofSound              

{

  public static void main(String a[]) //define main function

  {  

      //define variable.

      String medium;                            

      double distance,time=0;

      //creating Scanner class object for input from user.

      Scanner s=new Scanner(System.in);  

      //print message.

      System.out.printf("Enter medium(air,water or steel) : ");

      medium=s.nextLine();  //taking input.

      //print message.

      System.out.printf("Enter the distance that the sound will travel : ");

      distance=s.nextDouble(); //taking input.

      switch(medium) //checking condtion between range.

      {

          case "air":

                  time=distance/1100;         //apply formula

                  break;

          case "water":

                  time=distance/4900;            //apply formula

                  break;

          case "steel":

                  time=distance/16400;            //apply formula

                  break;

          default:

                  System.out.printf("Sorry, you must enter air,water or steel"); //error for invalid input of medium

                  System.exit(0);

      }

      System.out.printf("It take "+time+" seconds"); //print final answer.

  }

}

Output:

Enter medium(air,water or steel) : air

Enter the distance that the sound will travel : 200

It take 0.18181818181818182 seconds

Explanation:

In this program first, we import packages for user input. Then we declare the class in the class we declare all the variables and then we create the scanner class object. It is used for taking input from the user. Then we use the switch statement It is used for condition. It works between the ranges. In the switch statement, we apply all the formula that is given in the question. and at the last, we print the output using printf function in java.

6 0
3 years ago
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