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olchik [2.2K]
3 years ago
8

To pinpoint an earthquake's location, scientists need information from how many seismometers?

Computers and Technology
1 answer:
Mazyrski [523]3 years ago
7 0
<span>C. 3
   Due to the different speeds of P and S waves, a single seismometers can determine the distance to an earthquake. So, for a single station, the localization is any point on a circle around the station. With 2 stations, you'll have two circles that intersect at two points. The 3rd station is needed in order to determine which of the 2 points is the actual earthquake.</span>
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Answer:

See explaination

Explanation:

/File: ValidateCheckDigits.java

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Scanner;

public class ValidateCheckDigits {

public static void main(String[] args) {

String fileName = "numbers.txt"; //input file name

String validFileName = "valid_numbers.txt"; // file name of the output file

//Open the input file for reading and output file for writing

try(Scanner fileScanner = new Scanner( new File(fileName));

BufferedWriter fileWriter = new BufferedWriter( new FileWriter(validFileName))) {

//Until we have lines to be read in the input file

while(fileScanner.hasNextLine()) {

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//calculate the sum of first 5 digits

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for(int i = 0; i < 5; i++) {

sum += Integer.parseInt( line.charAt(i) + "");

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System.out.println("Verifying valid numbers completed.");

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System.err.println("Error: Unable to read or write to the file. Check if the input file exists in the same directory.");

}

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Check attachment for output and screenshot

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Answer:

class PersonInfo:

   def __init__(self):

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Explanation:

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