Answer to Question #160867 in C++ for mark

Question

Create a new C++ program named “partA_q1.cpp”

Write a program in C++ to calculate and display the kinetic energy (J) of a 2.4 kg mass when the user provides its velocity (km/h). Use the following equation:

1 𝑘𝑖𝑛𝑒𝑡𝑖𝑐𝑒𝑛𝑒𝑟𝑔𝑦 =2×𝑚𝑎𝑠𝑠 ×(

Question 2

Create a new C++ program named “partA_q2.cpp”

𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦 × 1000 2 60×60 )

Write a program in C++ that will let the user know whether a number that they enter is a multiple of eleven. Hint: If there is no remainder after dividing a number by eleven, that number is a multiple of eleven.

Question 3 [7 marks]

Create a new C++ program named “partA_q3.cpp”

Write another program that performs the same task as Question 2, but this program should allow the user to test another number, if they wish to do so.

(Hint: Modify your code from Question 2.)

Question 4 [15 marks] Create a new C++ program named “partA_q4.cpp”

Write a C++ program that uses a for() loop to calculate and display the sum of the following series, for a given the number of terms (n). n is to be provided by the user and must be greater than four.

𝑠𝑢𝑚𝑜𝑓𝑠𝑒𝑟𝑖𝑒𝑠= 1 + 1 + 1 +⋯+ 1

sin (1) sin (2) sin (3) sin (n) ππππ

[8 marks]

   

Answer 1

1.

#include <iostream>
using namespace std;
int main()
{
    double energy, velocity, mass=2.5;
    cout<<"mass of the object is: \n"<<mass<<endl;
    cout<<"\nPlease enter the value of velocity in km/hour "<<endl;
    cin>>velocity;
    cout<<"\nThe velocity of the object is:"<<velocity<<"km/hour"<<endl;
    velocity=velocity*5/18;
    cout<<"\n velocity of the object in meter/sec "<<velocity<<"m/s"<<endl;
    energy =mass*velocity*velocity/2;
    cout<<"\n The kinetic energy of the particle will be: "<<energy<<endl;
    return 0;
}

2.

#include <iostream>
using namespace std;
int main(){
    int a;
    cout<<"Please enter the number"<<endl;
    cin>>a;
    cout<<"The entered number is : "<<a<<endl;
    if(a<11){
        cout<<"The entered number is less than 11, so please enter the number which is greater than 11"<<endl;
    }else{
        if((a%11)==1)
            {
               cout<<"The entered number is not divisible by 11"<<endl;
            }else{
                cout<<"The entered number is divisible by 11"<<endl;
            }
    }
return 0;
}

3.#include<iostream>
using namespace std;
int main()
{
string a;
int n;
    cout<<"Please enter the number:"<<endl;
    cin>>a;
    cout<<"\n The entered number is:"<<a<<endl;
    n=a.length();
       if(((a[n-1]-'0') == 0) || ((a[n-1]-'0') == 5))
        {
        cout<<"\n entered number is divisible by 5"<<endl;
        }else
        {
        cout<<"\n entered number is not divisible by 5"<<endl;
        }
return 0;
}

4.#include<iostream>
#include<math.h>
using namespace std;
#define pi 3.14159265;
int main()
{
int i,n;
double sum=0;
cout<<"Please enter the number of terms in the series"<<endl;
cin>>n;
for(i=1;i<=n;i++)
{
sum=sum+sin(i);
}
cout<<"The resultant sum of the series"<<sum<<endl;
return 0;
}