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Anna35 [415]
3 years ago
6

What is the momentum of a 248 g rubber ball traveling at 30.0 m/s?

Physics
1 answer:
Vikentia [17]3 years ago
4 0
<span>The answer is, 7.44 kg*m/s</span>
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What did the results of photoelectric-effect experiment establish?
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Answer:

Thanks For Points Mark Me Brainliest Please

Explanation:

Electrons are emitted as soon as low-intensity, high-frequency light hits a metal surface.

A. Is It

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3 years ago
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How do you know that forces are balanced when static friction acts on an object?
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By looking at the acceleration of the object.
In fact, Netwon's second law states that the resultant of the forces acting on an object is equal to the product between the mass m of the object and its acceleration:
\sum F = ma

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3 years ago
Which of the following is true?
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Answer:

D

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3 years ago
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What distinguish adult humans from babies?
Ahat [919]
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Can anybody help meh :(
lara [203]

Answer:

n=1.56\times 10^{17} electrons

Explanation:

Given that,

Total charge = 9 mC = 0.009 C

0.009 C of charge passes through a wire in 3.6 s.

Let q' is the charge that passes through it in 10 s.

So,

\dfrac{0.009 }{3.6}=\dfrac{q'}{10}\\\\q'=\dfrac{0.009 \times 10}{3.6}\\\\q'=0.025\ C

We know that,

q = ne

Where

n is the number of electrons

So,

n=\dfrac{q}{e}\\\\n=\dfrac{0.025}{1.6\times 10^{-19}}\\\\n=1.56\times 10^{17}

So, 1.56\times 10^{17}electrons must pass through the cross-sectional area.

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2 years ago
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