Question

F = qE + qv × B

Exᴘʟᴀɪɴ ᴛʜᴇ ᴀʙᴏᴠᴇ ғᴏʀᴍᴜʟᴀ ᴘʟᴇᴀsᴇ ​

Answer 1

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• Lorentz force, the force exerted on a charged particle q moving with velocity v through an electric field E and magnetic field B. The entire electromagnetic force F on the charged particle is called the Lorentz force (after the Dutch physicist Hendrik A. Lorentz) and is given by F = qE + qv × B.

Answer 2

Answer:

#include <map>

#include <set>

#include <list>

#include <cmath>

#include <ctime>

#include <deque>

#include <queue>

#include <stack>

#include <bitset>

#include <cstdio>

#include <vector>

#include <cstdlib>

#include <numeric>

#include <sstream>

#include <iostream>

#include <algorithm>

using namespace std;

void partition(vector <int> ar) {

int p=ar[0];

vector <int> l, r;

for(int i=0; i<ar.size(); i++) {

int x=ar[i];

if (p>ar[i])

l.push_back(x);

else if(p<ar[i])

r.push_back(x);

}

if(!l.empty()){

for (int x = 0; x != l.size(); x++)

cout<<l[x]<<" ";}

cout<<p<<" ";

for (int x = 0; x != r.size(); x++)

cout<<r[x]<<" ";

}

int main(void) {

vector <int> _ar;

int _ar_size;

cin >> _ar_size;

for(int _ar_i=0; _ar_i<_ar_size; _ar_i++) {

int _ar_tmp;

cin >> _ar_tmp;

_ar.push_back(_ar_tmp);

}

partition(_ar);

return 0;

}