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blsea [12.9K]
3 years ago
6

You wish to lift a 12,000 lb stone by a vertical distance of 15 ft. Unfortunately, you can only generate a maximum pushing force

of 2,000 lb.
Computers and Technology
1 answer:
Mrac [35]3 years ago
8 0

Answer:

Students learn how a pulley can be used to change the direction of applied forces and move/lift extremely heavy ... Students perform a simple demonstration to see the mechanical advantage of using a pulley, and they ...

Explanation:

Students learn how a pulley can be used to change the direction of applied forces and move/lift extremely heavy ... Students perform a simple demonstration to see the mechanical advantage of using a pulley, and they ...

You might be interested in
Two devices used by the supermarket point-of-sale (POS) terminal are a bar code reader and a keyboard. Name two other input/outp
Svetllana [295]

Answer:

1. Receipt printer

Use of receipt printer:

i. They are used to print customer transaction receipts for proof.

2. Touch screen monitor

Use of touch screen monitor:

i. Allow record of when, where, price, and other important information about the sale conducted.

Explanation:

A Point of sale (POS) terminal takes record of transactions at the point where a product is purchased or a service is rendered. A barcode reader is a price scanner that is an input device used in a point-of-sale (POS) terminal. The keyboard is also an input device. The receipt printer is an output device since it converts information into a readable format. While only a touch screen monitor among the other devices mentioned above is an input and output device, because of its touch panel and its ability to display information.

             

6 0
3 years ago
Write a python program which prints the frequency of the numbers that were
REY [17]

Answer:

The program is as follows:

my_list = []

inp = input()

while inp.lower() != "stop":

   my_list.append(int(inp))

   inp = input()

Dict_freq = {}

for i in my_list:

   if (i in Dict_freq):

       Dict_freq[i]+= 1

   else:

       Dict_freq[i] = 1

for key, value in Dict_freq.items():

   print (key,"-",value,"times")

Explanation:

This initializes a list of elements

my_list = []

This gets input for the first element

inp = input()

The following iteration is repeated until user inputs stop --- assume all user inputs are valid

while inp.lower() != "stop":

This appends the input to the list

   my_list.append(int(inp))

This gets another input from the user

   inp = input()

This creates an empty dictionary

Dict_freq = {}

This iterates through the list

for i in my_list:

This adds each element and the frequency to the list

<em>    if (i in Dict_freq): </em>

<em>        Dict_freq[i]+= 1 </em>

<em>    else: </em>

<em>        Dict_freq[i] = 1 </em>

Iterate through the dictionary

for key, value in Dict_freq.items():

Print the dictionary elements and the frequency

   print (key,"-",value,"times")

3 0
3 years ago
Create a program named MealPriceCalculation that prompts users enter a meal price and the tip and then calculate and display the
Blizzard [7]

Answer:

  1. import java.util.Scanner;
  2. public class MealPriceCalculation{
  3.    public static void main(String[] args) {
  4.        Scanner input = new Scanner(System.in);
  5.        System.out.print("Enter meal price: ");
  6.        double meal = input.nextDouble();
  7.        System.out.print("Enter tip: ");
  8.        double tip = input.nextDouble();
  9.        calculatePrice(meal,tip);
  10.        calculatePrice(meal,(int)tip);
  11.    }
  12.    public static void calculatePrice(double meal, double tip){
  13.        System.out.println("Total meal price: $" + (meal + tip) );
  14.    }
  15.    public static void calculatePrice(double meal, int tip){
  16.        System.out.println("Total meal price $" + (meal+tip));
  17.    }
  18. }

Explanation:

The solution code is written in Java.

Overload methods are the methods that share the same name but with different method signature. In this question, we create two overload methods calculatePrice (Line 17-23). One version will accept parameter meal and tip in double type and another will accept parameter meal in double but tip in integer. Both of this method are doing the same job which is just printing the total of meal.

In the main program, create a Scanner object and use it to prompt user to input meal price and tip (Line 6-10).  Next call the calculatePrice method for twice. In the first time, pass meal and tip as double type data to calculatePrice method (Line 12). In the second time, pass meal in double but tip in integer to the method. Only the method with parameter list that match the argument data type will be implemented and output the total meal price.  

4 0
3 years ago
The class dateType was designed to implement the date in a program, but the member function setDate and the constructor do not c
san4es73 [151]

Answer:

see explaination

Explanation:

dateType.h

#ifndef dateType_H

#define dateType_H

class dateType

{

public:

void setDate(int month, int day, int year);

//Function to set the date.

//The member variables dMonth, dDay, and dYear are set

//according to the parameters.

//Postcondition: dMonth = month; dDay = day;

// dYear = year

int getDay() const;

//Function to return the day.

//Postcondition: The value of dDay is returned.

int getMonth() const;

//Function to return the month.

//Postcondition: The value of dMonth is returned.

int getYear() const;

//Function to return the year.

//Postcondition: The value of dYear is returned.

void printDate() const;

//Function to output the date in the form mm-dd-yyyy.

void isLeapYear() const;

dateType(int month = 1, int day = 1, int year = 1900);

//Constructor to set the date

//The member variables dMonth, dDay, and dYear are set

//according to the parameters.

//Postcondition: dMonth = month; dDay = day; dYear = year;

// If no values are specified, the default

// values are used to initialize the member

// variables.

private:

int dMonth; //variable to store the month

int dDay; //variable to store the day

int dYear; //variable to store the year

};

#endif

dateType.cpp

#include <iostream>

#include "dateType.h"

using namespace std;

void dateType::setDate(int month, int day, int year)

{

// Checking month is valid

while(month<1 || month>12)

{

cout << "Enterd month "<<month<< " is wrong"<<endl;

cout << "Enter correct month"<<endl;

cin>>month;

}

dMonth = month;

// Checking date is valid

while(day<1 || day>31)

{

cout << "Enterd date "<<day<<" is wrong"<<endl;

cout<<"Enter correct date"<<endl;

cin>>day;

}

dDay = day;

int count_digits = 0;

int flag=0;

int year1;

// Counting number of digits in year

while(flag==0)

{

year1=year;

count_digits=0;

while (year) {

year /= 10;

count_digits++;

}

if(count_digits != 4)

{

cout << "Enterd year "<<year1<<" is wrong"<<endl;

cout<<"Enter correct year"<<endl;

cin>>year;

flag=0;

}

else

flag=1;

}

dYear = year1;

}

int dateType::getDay() const

{

return dDay;

}

int dateType::getMonth() const

{

return dMonth;

}

int dateType::getYear() const

{

return dYear;

}

void dateType::printDate() const

{

cout << dMonth << "-" << dDay << "-" << dYear;

}

void dateType::isLeapYear() const

{

if ( dYear%400 == 0)

cout<<endl<<dYear<< " is leap year.\n";

else if ( dYear%100 == 0)

cout<<endl<<dYear<< " is leap year.\n";

else if ( dYear%4 == 0 )

cout<<endl<<dYear<< " is leap year.\n";

else

cout<<endl<<dYear<< " is not leap year.\n";

}

//Constructor with parameters

dateType::dateType(int month, int day, int year)

{

// Checking month is valid

while(month<1 || month>12)

{

cout << "Enterd month "<<month<< " is wrong"<<endl;

cout << "Enter correct month"<<endl;

cin>>month;

}

dMonth = month;

// Checking date is valid

while(day<1 || day>31)

{

cout << "Enterd date "<<day<<" is wrong"<<endl;

cout<<"Enter correct date"<<endl;

cin>>day;

}

dDay = day;

int count_digits = 0;

int flag=0;

int year1;

// Counting number of digits in year

while(flag==0)

{

year1=year;

count_digits=0;

while (year) {

year /= 10;

count_digits++;

}

if(count_digits != 4)

{

cout << "Enterd year "<<year1<<" is wrong"<<endl;

cout<<"Enter correct year"<<endl;

cin>>year;

flag=0;

}

else

flag=1;

}

dYear = year1;

}

main.cpp

#include<iostream>

#include "dateType.h"

using namespace std;

int main()

{

dateType *dt1=new dateType();

cout<<"Date is "<<endl;

dt1->printDate();

cout<<endl;

dt1->isLeapYear();

cout<<endl;

dateType *dt2=new dateType(11,14,2019);

cout<<"Date is "<<endl;

dt2->printDate();

cout<<endl;

dt2->isLeapYear();

cout<<endl;

dt2->setDate(13,32,2016);

cout<<"Date is "<<endl;

dt2->printDate();

cout<<endl;

dt2->isLeapYear();

cout<<endl;

dt1->setDate(10,10,198);

cout<<"Date is "<<endl;

dt1->printDate();

cout<<endl;

dt1->isLeapYear();

cout<<endl;

system("pause");

return 0;

}

4 0
3 years ago
Read 2 more answers
_____ has many knowledge management applications, ranging from mapping knowledge flows and identifying knowledge gaps within org
harkovskaia [24]

Answer:

A. Social network analysis (SNA).

Explanation:

This is explained to be a process of quantitative and qualitative analysis of a social network. It measures and maps the flow of relationships and relationship changes between knowledge possessing entities. Simple and complex entities include websites, computers, animals, humans, groups, organizations and nations.

The SNA structure is made up of node entities, such as humans, and ties, such as relationships. The advent of modern thought and computing facilitated a gradual evolution of the social networking concept in the form of highly complex, graphical based networks with many types of nodes and ties. These networks are the key to procedures and initiatives involving problem solving, administration and operations.

5 0
3 years ago
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