Which operating system became obsolete with the arrival of a more advanced graphical user interfaces

13) When developing film, how do you dispose of fixer as opposed to developer?

MAVERICK [17]

Answer:

B) Developer is poured down the drain while fixer can be reduced

Explanation:

The effluents produced during photographic processing includes, wash water, bleach, fixer, and developer

The developer is an alkaline solution, with a pH of approximately 10.0, while the pH of the fixer is about 4.3, it is therefore, acidic

The rate of discharge of the developer to the fixer is 2 to 1, and the exhausted developer, fixer and process effluents combined are neutral and can be handle by the the treatment works and the drain pipes

Fixer which remain clear can be reused for more than a day, while the spent basic Developer and the acidic Spent Stop Bath can be combined to form a neutral solution, having a pH of approximately 7, which make them less hazardous to be disposed off down the sink into the drain

Therefore, <em>developer is poured down the drain while fixer can be reused</em>

6 0

3 years ago

why is it important for young people to start saving early as possible given the principles of interest?

hjlf

<span>Saving at a young age could be a really great investment on your future from years from now. It has several benefits like learning how to handle your money properly, investing to grow your money more and an early retirement with a lot of coins in your pocket for when you want to enjoy traveling more.</span>

5 0

3 years ago

Read 2 more answers

If the object instance is created in a user program, then the object instance can access both the public and private members of

rewona [7]

Answer:

False

Explanation:

The private member of a class is not accessible by using the Dot notation ,however the private member are those which are not accessible inside the class they are accessible outside the class .The public member are accessible inside the class so they are accessible by using the dot operator .

<u>Following are the example is given below in C++ Language </u>

#include<iostream> // header file

using namespace std;

class Rectangle

{

private:

double r; // private member

public:

double area()

{ return 3.14*r*r;

}

};

int main()

{

Rectangle r1;// creating the object

r1.r = 3.5;

double t= r1.area(); // calling

cout<<" Area is:"<<t;

return 0;

}

Output:

compile time error is generated

<u>The correct program to access the private member of class is given below </u>

#include<iostream> // header file

using namespace std;

class Rectangle

{

private:

double r; // private member

public:

double area()

{

r1=r;

double t2=3.14*r2*r2;

return(t2); // return the value

}

};

int main()

{

Rectangle r1;// creating the object

r1.r = 1.5;

double t= r1.area(); // calling

cout<<" Area is:"<<t;

return 0;

}

Therefore the given statement is False

5 0

3 years ago

What is the value of the totalsString variable after the following code is executed? var totals = [141.95, 212.95, 411, 10.95];

Alex Ar [27]

<h2>Answer:</h2>

141.95|212.95|312.95|10.95|

<h2>Explanation:</h2>

<em>Reformatting the code snippet and giving it line numbers;</em>

1. var totals = [141.95, 212.95, 411, 10.95];

2. totals[2] = 312.95;

3. var totalsString = "";

4. for (var i = 0; i < totals.length; i++) {

5. totalsString += totals[i] + "|";

6. }

Line 1 creates an array called totals with four elements.

First element = totals[0] =141.95

Second element = totals[1] = 212.95

Third element = totals[2] = 411

Fourth element = totals[3] = 10.95

Line 2 replaces the value of the third element <em>totals[2]</em> = 411 with 312.95.

Therefore the array <em>totals = </em>[141.95, 212.95, 312.95, 10.95]

Line 3 creates an empty string called totalsString

Lines 4 - 6 create a for loop that cycles from i=0 to i<totals.length

totals.length = 4 (which is the number of items in the array totals)

This means that the loop cycles from i=0 to i<4

During cycle 1 when i = 0, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[0] + "|" //substitute the values

totalsString = "" + 141.95 + "|"

totalsString = 141.95|

During cycle 2 when i = 1, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[1] + "|" //substitute the values

totalsString = "141.95|" + 212.95 + "|"

totalsString = 141.95|212.95|

During cycle 3 when i = 2, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[2] + "|" //substitute the values

totalsString = "141.95|212.95|" + 312.95 + "|"

totalsString = 141.95|212.95|312.95|

During cycle 4 when i = 3, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[3] + "|" //substitute the values

totalsString = "141.95|212.95|312.95|" + 10.95 + "|"

totalsString = 141.95|212.95|312.95|10.95|

At the end of the execution, totalsString = 141.95|212.95|312.95|10.95|

7 0

3 years ago

A window may be resized by dragging the___ or side of it

dangina [55]