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taurus [48]
2 years ago
15

Why does the momentum of a billiard ball rolling on a billiard table change?

Physics
1 answer:
stiv31 [10]2 years ago
8 0

If the billiard ball is going at the constant speed and contains its mass then the momentum WONT be changing. But realistically you have external forces like friction and air resistance changing the velocity thus changing the momentum. In this case momentum is not conserved because you're introduction an external force.

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Which of the following is the correct definition of light energy?
Sveta_85 [38]
B is the correct answer
3 0
2 years ago
A strong lightning bolt transfers an electric charge of about 16 C to Earth (or vice versa). How many electrons are transferred?
zzz [600]

Answer:

Number of electrons, n=9.98\times 10^{19}

Explanation:

A strong lightning bolt transfers an electric charge of about 16 C to Earth, q = 16 C

We need to find the number of electrons that transferred. Let there are n electrons transferred. It is given by using quantization of electric charge as :

q = ne

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n=\dfrac{16}{1.602\times 10^{-19}}

n=9.98\times 10^{19}

So, there are 9.98\times 10^{19} electrons that gets transferred. Hence, this is the required solution.

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3 years ago
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Answer:

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Explanation:

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3 years ago
Obtenha a velocidade escalar média, em cada caso:
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2 years ago
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Answer:

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- I'm reading this back and it doesn't make much sense, if you want me to reword this I can

5 0
2 years ago
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