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3 years ago

Which situation is the BEST example of inertia?

Physics

2 answers:

jeka57 [31]3 years ago

5 0

A situation would be a ball sitting at rest or a ball rolling down a table without any external interference

Veronika [31]3 years ago

3 0

Answer:

Explanation:

Inertia is the property of the body which resists any change in the state of motion of the body.

There are three types of inertia.

1. inertia of rest

2. inertia of motion

3. inertia of direction

When a book is placed on the table top, it remains at rest. So, it is the example of inertia of rest.

If a ball is sliding on the floor it continues in motion, it is an example of inertia of motion.

If a car is moving towards east it continues to move n the same direction, it is an example of inertia of direction.

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A hydrogen atom in a galaxy moving with a speed of 6.65×106 m/???? away from the Earth emits light with a wavelength of 5.13×10−

Mumz [18]

Answer:

The observed wavelength on Earth from that hydrogen atom is $5.24\times 10^{-7}\ m$ .

Explanation:

Given that,

The actual wavelength of the hydrogen atom, $\lambda_a=5.13\times 10^{-7}\ m$

A hydrogen atom in a galaxy moving with a speed of, $v=6.65\times 10^6\ m/s$

We need to find the observed wavelength on Earth from that hydrogen atom. The speed of galaxy is given by :

$v=c\times \dfrac{\lambda_o-\lambda_a}{\lambda_a}$

$\lambda_o$ is the observed wavelength

$\lambda_o=\dfrac{v\lambda_a}{c}+\lambda_a\\\\\lambda_o=\dfrac{6.65\times 10^6\times 5.13\times 10^{-7}}{3\times 10^8}+5.13\times 10^{-7}\\\\\lambda_o=5.24\times 10^{-7}\ m$

So, the observed wavelength on Earth from that hydrogen atom is $5.24\times 10^{-7}\ m$ . Hence, this is the required solution.

8 0

3 years ago

.3.3: Populating a vector with a for loop. Write a for loop to populate vector userGuesses with NUM_GUESSES integers. Read integ

Reptile [31]

Answer:

#include <iostream>

#include <vector>

using namespace std;

int main() {

const int NUM_GUESSES = 3;

vector<int> userGuesses(NUM_GUESSES);

int i = 0;

int uGuess = 0;

for(i = 0; i <= userGuesses.size() - 1; i++){

cin >> uGuess;

userGuesses.at(i) = uGuess;

}

cout << endl;

return 0;

}

Explanation:

First inbuilt library were imported. Then inside the main( ) function, 3 was assigned to NUM_GUESSES meaning the user is to guess 3 numbers. Next, a vector was defined with a size of NUM_GUESSES.

Then a for-loop is use to receive user guess via cin and each guess is assigned to the vector.

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3 years ago

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Novosadov [1.4K]

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3 years ago

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NeX [460]

Answer:

photosynthesis, burning fossil fuels, and simply releasing breath from the lungs.

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vesna_86 [32]

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