Answer:
3
Explanation:
ER model can be used and is based on three basic concepts: Entities, Attributes & Relationships.
An entity can be place, person, object, event or a concept, which stores data in the database.
Relationship is nothing but an association among two or more entities. A weak entity is a type of entity which doesn't have its key attribute.
Answer:
Centrifugation.
Explanation:
When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in centrifugation.
Centrifugation can be defined as the process of separating particles from a liquid solution according to density, shape, size, viscosity through the use of a centrifugal force. In order to separate these particles, the particles are poured into a liquid and placed in a centrifuge tube. A centrifuge is an electronic device used for the separation of particles in liquid through the application of centrifugal force. Once the centrifuge tube is mounted on the rotor of the centrifuge, it is spun rapidly at a specific speed thereby separating the solution; denser particles are forced to the bottom (by moving outward in the radial direction) and the lighter particles stay at the top as a result of their low density.
Answer:
The program to this question can be given as:
Program:
#include <iostream> //header file
using namespace std; //using namespace
double MphAndMinutesToMiles(double milesPerHour, double minutesTraveled) //defining method
{
return (minutesTraveled/ 60.0)*milesPerHour; //return value.
}
int main() //defining main method
{
double milesPerHour,minutesTraveled; //define variable
cout<<"Enter miles per hour :";
cin >> milesPerHour;
cout<<"Enter travelling minutes :";
cin >> minutesTraveled;
cout << "Miles: "<< MphAndMinutesToMiles(milesPerHour, minutesTraveled)<< endl;
return 0;
}
Output:
Enter miles per hour :12
Enter travelling minutes :20
Miles: 4
Explanation:
The explanation of the above C++ program can be given as:
- In the first header file is include the function is define that is "MphAndMinutesToMiles". This function accepts two parameters that are "milesPerHour and minutesTraveled".
- Both parameter datatype is double and the function return type is also double. Inside a function calculate miles and return its value.
- In the main method, two variable defines that takes value from the user side and pass into the function. To print function return value we use "cout" function that prints function return value.
Answer:
Boot partition and system partition
Explanation:
System partition is the primary partition that is used as the active boot partition,it saves boot files and all files that will be used. System partition is also known as the system directory or root directory and is usually given the identifier "c"
Boot partition is the disk partition that holds the files for the operating system files Windows operating system (either XP, Vista, 7, 8, 8.1 or 10), it works with the system partition and tells the computer where to look when starting. It given the identifier of letter "D" or "E"
The answer is D: Turn yarn into cloth.
During the industrial revolution, a number of new inventions in the textile industry greatly impacted this industry. However, it was the invention of the Spinning Jenny that is credited a lot. It helped move the textile industry from homes to factories and made wool spinning easier and faster. This invention, however, impacted the labor workforce. It reduced the amount of work needed to produce yarn. One worker was able to work 8 or more spools at once and rose to 120 due to technological advancements.
