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3 years ago

What should -7/56 BE DIVIDE TO GET -1/8

Engineering

2 answers:

Luba_88 [7]3 years ago

8 0

Answer:

i dont remember how to do this im so sorry but i think its -14.5

Explanation:

aivan3 [116]3 years ago

5 0

Answer:

7/7

Explanation:

7/56 ÷1

7/56÷ 7/7

7/56 ×7/7

1/8

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A cylindrical resistor element on a circuit board dissipates 0.6 W of power. The resistor is 1.5 cm long, and has a diameter of

Burka [1]

Answer:

a. 51.84Kj

b. 2808.99 W/m^2

c. 11.75%

Explanation:

Amount of heat this resistor dissipates during a 24-hour period

= amount of power dissipated * time

= 0.6 * 24 = 14.4 Watt hour

(Note 3.6Watt hour = 1Kj )

=14.4*3.6 = 51.84Kj

Heat flux = amount of power dissipated/ surface area

surface area = area of the two circular end + area of the curve surface

$=2*\frac{\pi D^{2} }{4} + \pi DL\\=2*\frac{\pi *(\frac{0.4}{100} )^{2} }{4} + \pi *\frac{0.4}{100} *\frac{1.5}{100}$

= 2.136 *10^-4 $m^{2}$

Heat flux = $\frac{0.6}{2.136 * 10^{-4} }$ = 2808.99 $W/m^{2}$

fraction of heat dissipated from the top and bottom surface

$=\frac{\frac{2*\pi D^{2} }{4} }{\frac{2*\pi D^{2}}{4} + \pi DL } \\\\=\\\frac{\frac{2*\pi *(\frac{0.4}{100} )^{2} }{4} }{\frac{2*\pi *(\frac{0.4}{100} )^{2} }{4} +\pi *\frac{0.4}{100} *\frac{1.5}{100} } \\\\=\frac{2.51*10^{-5} }{2.136*10^{-4} } \\\\\= 0.1175$

=11.75%

8 0

3 years ago

Read 2 more answers

D. projectile

Colt1911 [192]

Answer: parabola

Explanation:

•Parabolic Trajectory:

In conclusion, projectiles travel with a parabolic trajectory due to the fact that the downward force of gravity accelerates them downward from their otherwise straight-line, gravity-free trajectory.

5 0

3 years ago

Which of the following hazards is shared by surface mining and sub-surface mining?

lubasha [3.4K]

B I guess. since they both have potential to collapse

4 0

3 years ago

Read 2 more answers

A 2-mm-diameter electrical wire is insulated by a 2-mm-thick rubberized sheath (k = 0.13 W/m K), and the wire/sheath interface i

Semmy [17]

Answer:

maximum allowable electrical power=4.51W/m

critical radius of the insulation=13mm

Explanation:

Hello!

To solve this heat transfer problem we must initially draw the wire and interpret the whole problem (see attached image)

Subsequently, consider the heat transfer equation from the internal part of the tube to the external air, taking into account the resistance by convection, and conduction as shown in the attached image

to find the critical insulation radius we must divide the conductivity of the material by the external convective coefficient

$r=\frac{k}{h} =\frac{0.13}{10}=0.013m=13mm$

3 0

3 years ago

Q4 a.

dedylja [7]

The Java program that accepts a matrix of M × N order and then interchanges diagonals of the matrix is given below:

<h3>Steps: </h3>

1. We can only interchange diagonals for a square matrix.
2. Therefore, we would have to create a square matrix of size [M × M].
3. We would check whether the matrix is a square matrix or not. If the matrix is square then follow step 3 else terminate the program.
4. Apply logic for interchange diagonal of the matrix some logic is given below.

// Java Program to Accept a Matrix of Order M x N &

// Interchange the Diagonals

import java.util.Scanner;

public class InterchangeDiagonals {

public static void main(String[] args)

{

// declare variable

int m, n, i, j, temp;

// create a object of scanner class

Scanner sc = new Scanner(System.in);

System.out.print("Enter number of rows ");

// take number of rows

m = sc.nextInt();

System.out.print("Enter number of columns ");

// take number of columns

n = sc.nextInt();

// declare a mxn order array

int a[][] = new int[m][n];

// if block it's execute when m is equals to n

if (m == n) {

System.out.println(

"Enter all the values of matrix ");

// take the matrix inputs

for (i = 0; i < m; i++) {

for (j = 0; j < n; j++) {

a[i][j] = sc.nextInt();

}

System.out.println("original Matrix:");

// print the original matrix

for (i = 0; i < m; i++) {

for (j = 0; j < n; j++) {

System.out.print(a[i][j] + " ");

}

System.out.println("");

}

// perform interchange

for (j = 0; j < m; j++) {

temp = a[j][j];

a[j][j] = a[j][n - 1 - j];

a[j][n - 1 - j] = temp;

}

System.out.println(

" after interchanging diagonals of matrix ");

// print interchanged matrix

for (i = 0; i < m; i++) {

for (j = 0; j < n; j++) {

System.out.print(a[i][j] + " ");

}

System.out.println("");

}

// else block it's only execute when m is not equals

// to n

else {

System.out.println("Rows not equal to columns");

}

Read more about java programming here:

brainly.com/question/18554491

#SPJ1

7 0

1 year ago

What should -7/56 BE DIVIDE TO GET -1/8​

What should -7/56 BE DIVIDE TO GET -1/8