Answer:
#include <iostream>
#include <vector>
using namespace std;
void swapFrontBack(vector<int>& nums) {
if(nums.size() < 2) {
return;
}
swap(nums[0], nums[nums.size()-1]);
}
void printit(vector<int>& arr) {
for(int i = 0; i < arr.size(); i++) {
cout << arr[i] << " ";
}
cout << endl;
}
int main() {
vector<int> num1;
swapFrontBack(num1);
printit(num1);
num1.push_back(1);
swapFrontBack(num1);
printit(num1);
num1.push_back(2);
swapFrontBack(num1);
printit(num1);
vector<int> num2(10, 1);
num2[9] = 2;
swapFrontBack(num2);
printit(num2);
return 0;
}
Explanation:
A buffer is able to resist pH change because the two components (conjugate acid and conjugate base) are both present in appreciable amounts at equilibrium and are able to neutralize small amounts of other acids and bases (in the form of H3O+ and OH-) when the are added to the solution.
Answer:
a spreadsheet
Explanation:
The data is of statistical type and is experimentally based. And hence, the spreadsheet is the best kind of software that can be used to register the record. And we can save 10 such experient results with the same format of tables on 10 different worksheets, and if we want we can adjust the readings of the 10 similar experiments at one time. And hence, we can quite effectively record as well as analyze this data on the spreadsheet. Hence, the spreadsheet is the correct option.
The most appropriate answer is A, the the start winding on a split-phase motor is to provide a starting torque. A split-phase motor is a single phase electrical motor (common in many household applications such as washing machines and household fans), with two distinct windings on the stator coils, the start windings and the run windings, at 90 degrees apart. When the motor is energised the start coils acts like a second phase (2 phase motor) and helps provide the rotating magnetic field that is necessary to turn the rotor. Once moving, only the run winding (single phase) is required to keep the motor spinning.
The other answers are irrelevant for the starting of the motor.
