1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
asambeis [7]
2 years ago
5

Project light with a system of lenses used for projecting slides or film into a screen.

Computers and Technology
1 answer:
Travka [436]2 years ago
7 0

Answer:

Optical system. An overhead projector works on the same principle as a slide projector, in which a focusing lens projects light from an illuminated slide onto a projection screen where a real image is formed.

Explanation:

You might be interested in
What will be the output of the following code? <?php $foo = 'Bob'; $bar = $foo; $bar = "My name is $bar"; print $bar; print $
SCORPION-xisa [38]

Answer: b. My name is BobBob

Explanation:

  • $foo = 'Bob'; // Assigns foo variable the value Bob
  • $bar = $foo; // Assigns the value of foo to bar
  • $bar = "My name is $bar"; //changes the $bar this is the way to  include variables directly in the string.
  • print $bar; // this prints My name is and moves to the variable $bar which prints the value of $bar which is the value of $foo i.e. Bob
  • print $foo; // prints another Bob
7 0
3 years ago
Read 2 more answers
The __________ tag is used to create a forced line break without starting a new paragraph.
Ainat [17]
<br> acts as a linefeed.
3 0
3 years ago
Part 1: Create an application that allows you to enter student data that consists of an ID number, first name, last name, and gr
aleksley [76]

<u>PART A</u>

import java.io.*;

import java.util.Scanner;

public class StudentsStanding {

   private static final double CUT_OFF = 2.0;

   public static void main(String[] args)

   {

       try {

           PrintWriter goodFile = new PrintWriter(new FileWriter("goodStanding.txt"));

           PrintWriter probationFile = new PrintWriter(new FileWriter("probation.txt"));

           char choice;

           String firstName,lastName;

           Scanner input = new Scanner(System.in);

           int id;

           double gradePoint;

           do {

               System.out.print("Enter student Id: ");

               id = input.nextInt();

               input.nextLine();

               System.out.print("Enter First name: ");

               firstName = input.nextLine();

               System.out.print("Enter last name: ");

               lastName = input.nextLine();

               System.out.print("Enter grade point: ");

               gradePoint = input.nextDouble();

               if(gradePoint<CUT_OFF)

                   probationFile.println(id+","+firstName+","+lastName+","+gradePoint);

               else

                   goodFile.println(id+","+firstName+","+lastName+","+gradePoint);

               System.out.print("Do you want to continue..(y/n): ");

               choice = input.next().toLowerCase().charAt(0);

           }while (choice!='n');

           //close the streams

           goodFile.close();

           probationFile.close();

       }

       catch (IOException ex)

       {

           System.err.println("IO Exception occurs...");

       }

   }

}

<u>PART 2</u>

import java.io.File;

import java.io.FileNotFoundException;

import java.util.Scanner;

public class StudentsStanding2 {

   private static final double CUT_OFF = 2.0;

   public static void main(String[] args)

   {

       String header = "ID\t"+"First Name"+"\t"+"Last Name"+"\t"+"Grade Point"+"\t"+"Exceeds/Fall\n";

       try {

           Scanner probationFile= new Scanner(new File("probation.txt"));

           Scanner goodFile = new Scanner(new File("goodStanding.txt"));

           System.out.println("Cut Off is: "+CUT_OFF);

           System.out.println(header);

           double point ,exceed;

           while (probationFile.hasNextLine())

           {

               String[] tokens = probationFile.nextLine().split(",");

               point = Double.parseDouble(tokens[3]);

               exceed = CUT_OFF-point;

               System.out.println(String.format("%4s %7s %10s %10s %10s",tokens[0],tokens[1],tokens[2],point,String.format("%.2f",exceed)));

           }

           //Close the stream

           probationFile.close();

           while (goodFile.hasNextLine())

           {

               String[] tokens = goodFile.nextLine().split(",");

               point = Double.parseDouble(tokens[3]);

               exceed = point - CUT_OFF;

               System.out.println(String.format("%4s %7s %10s %10s %10s",tokens[0],tokens[1],tokens[2],point,String.format("%.2f",exceed)));

           }

           goodFile.close();

       }

       catch (FileNotFoundException ex)

       {

           System.err.println("File not found!!!");

       }

   }

}

6 0
3 years ago
Which spreadsheet feature could the scholarship committee use to locate applicants who meet the criteria?
Radda [10]

Answer:

H8

Explanation:

4 0
2 years ago
Write a function called printRange() that accepts two integers as arguments and prints the sequence of numbers between the two a
a_sh-v [17]

Answer:

def printRange(start, stop, steps = 1):

   list1 = []

   if steps > start or stop:

       print("Steps is larger than start and stop value")

       return None

   if int(start) < int(stop):

       while start < stop:

           start = start + int(steps)

           list1.append(start)

       print(list1)

   elif start > stop:

       while start > stop:

           stop = stop + int(steps)

           list1.append(stop)

       print(list1)

   elif start == stop:

       print(start)

   else:

       print("Values are not integers.")

for easier viewing:

https://www.codepile.net/pile/e95verLk

If you need help understanding comment below.

5 0
1 year ago
Other questions:
  • One type of technology that can verify a person's identity is _____.
    6·2 answers
  • Excel assigns the name ____ to the first excel table created in a workbook.
    10·1 answer
  • Which option nukes your systemâall apps, programs, user files, user settingsâand presents a fresh installation of Windows?
    13·1 answer
  • Write a function called intersect with four float parameter
    11·1 answer
  • JAVA QUESTION::
    10·1 answer
  • A user purchased a new smart home device with embedded software and connected the device to a home network. The user then regist
    5·1 answer
  • What will the following code display? int numbers[4] = { 99, 87 }; cout &lt;&lt; numbers[3] &lt;&lt; endl; a. 87 b.0 d. 34. What
    12·1 answer
  • 7. Which cipher is based on the clues of the physical factors, rather than the hardware or a software cryptosystem
    8·1 answer
  • Bro i swear whenever i play fortnite duos, they ask you if you don't have a mic, if you don't then they just leave, so annoying
    15·2 answers
  • What goes in between the &lt; &gt; when declaring a new ArrayList?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!