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pantera1 [17]
3 years ago
15

A circular copper disk of diameter D=10 cm rotates at frequency =1800 rev/min about an axis through its center and at right angl

es to the disk. A uniform magnetic field B of 10,000 gauss is perpendicular to the disk. What potential difference e develops between the axis of the disk and its rim? Express your answers in terms of variables first and then plug in numbers afterword
Computers and Technology
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

Induced current is 0.226 A

Explanation:

To calculate potential difference we have

E =1/2Bomega*r2 =1/2*1*1800*3.14*0.05=141.3

putting values we get

the p.d is 141.3

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Write a method swaparrayends() that swaps the first and last elements of its array parameter. ex: sortarray = {10, 20, 30, 40} b
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In the C programming language, you can't determine the array size from the parameter, so you have to pass it in as an extra parameter. The solution could be:

#include <stdio.h>

void swaparrayends(int arr[], int nrElements)
{
int temp = arr[0];
arr[0] = arr[nrElements - 1];
arr[nrElements - 1] = temp;
}


void main()
{
int i;
int myArray[] = { 1,2,3,4,5 };
int nrElements = sizeof(myArray) / sizeof(myArray[0]);
swaparrayends(myArray, nrElements);

for (i = 0; i < nrElements; i++)
{
printf("%d ", myArray[i]);
}

getchar();
}

In higher languages like C# it becomes much simpler:

        static void Main(string[] args)
        {
            int[] myArray = {1, 2, 3, 4, 5};
            swaparrayends(myArray);
            foreach (var el in myArray)
            {
                Console.Write(el + " ");
            }

            Console.ReadLine();
        }

        static void swaparrayends(int[] arr)
        {
            int temp = arr[0];
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3 0
3 years ago
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Answer:

Import java.awt.*;

import java.util.*;

public class Sprhere

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//--------------------------------------------------------------------// Accesors.//--------------------------------------------------------------------public double get Radius()

{return r;}

public double get Diameter()

{return diameter;}

public double get SurfaceA()

{return surfaceA;}

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//--------------------------------------------------------------------// Mutators.//--------------------------------------------------------------------

3 0
3 years ago
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Black_prince [1.1K]

Answer:

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Explanation:

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