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Nady [450]
3 years ago
15

A piece of glass has a thin film of gasoline floating on it. A beam of light is shining perpendicular on the film. If the wavele

ngth of light incident on the film is 560 nm and the indices of refraction of gasoline and glass are 1.40 and 1.50, respectively, what is the minimum nonzero thickness of the film to see a bright reflection?
Computers and Technology
1 answer:
kobusy [5.1K]3 years ago
3 0

Answer:

200 nm

Explanation:

We need a constructive interference to see the bright reflection

we know that 2t=m\lambda  where m=1 and \lambda is the wavelength of the gasoline

so \lambda =\frac{560}{1.4}=400nm

putting the value of m and \lambda in thickness equation

t=\frac{1\times 400}{2}=200nm

so the thickness of the film will be 200 nm

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andre [41]

Answer:

Explanation:

The following code is written in Java. It creates the loop as requested and validates the information provided before continuing, if the information is invalid it prints "Invalid Information to the screen" and asks the user to enter the information again. Finally, outputing all the requested information at the end of the program. The code has been tested and the output can be seen in the attached image below.

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Scanner;

class Brainly {

   public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       int totalValues = 0;

       int totalTaxes = 0;

       int count = 0;

       while(true) {

           int lotNumber, value;

           double tax;

           System.out.println("Would you like to add an Entry: 1=Yes 0=No");

           int answer = in.nextInt();

           if (answer == 1) {

               System.out.println("Please enter lot number: ");

               lotNumber = in.nextInt();

               if ((lotNumber >= 0) && (lotNumber <= 999999)) {

                   System.out.println("Please enter assessed value: ");

                   value = in.nextInt();

                   tax = value * 0.05;

                   System.out.println("Lot Number: " + lotNumber);

                   System.out.println("Property Value: " + value);

                   System.out.println("Property Tax: " + tax);

                   totalTaxes += tax;

                   totalValues += value;

                   count += 1;

               } else {

                   System.out.println("Invalid Lot Number");

               }

           } else {

               break;

           }

       }

       int average = totalTaxes / count;

       System.out.println("Total Property Values: " + totalValues);

       System.out.println("Total Property Taxes: " + totalTaxes);

       System.out.println("Average Property Tax" + average);

   }

}

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3 years ago
4. What is an example of a Trans receiver? *<br> A. Pager<br> B. Wi-Fi<br> C. Telephone
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I really think it A : pager
I hope this helps !!
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noname [10]

Answer:

if ur lonely i suggest an app/website called mylol

Explanation:

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3 years ago
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A Network Management Station (NMS) is using SNMP to manage some Cisco routers and switches with SNMPv2c. Which of the following
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Answer:

b. Using either the read-write or read-only community string.

Explanation:

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In the SNMPv2c, if the NMS sends either the read-write or read-only community string requests, SNMP Get requests will be allowed.

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