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KIM [24]
3 years ago
13

Friction _____.

Physics
1 answer:
quester [9]3 years ago
8 0

Answer:

all above

Explanation:

friction is necessary to live

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Deffense [45]

I believe your answer should be C. Speed.

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3 years ago
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A chemist needs 15.0 grams of ethanol for a reaction. If the density of ethanol is 0.789 g/ml, how many milliliters of alcohol s
harina [27]
  • Mass=15g
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\\ \bull\tt\dashrightarrow Density=\dfrac{Mass}{Volume}

\\ \bull\tt\dashrightarrow Volume=\dfrac{Mass}{Density}

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\\ \bull\tt\dashrightarrow Volume=19.01mL

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3 years ago
Find the net charge of a system consisting of 206 electrons and 161 protons. Express your answer using two significant figures.
kondaur [170]

Answer:

-72\times 10^{-19}C[/tex]

Explanation:

Both electron and proton have the same amount of charge but signs are opposite , electron contains negative charge and proton contain positive charge

Charge on 1 electron = -1.6\times 10^{-19}C

So charge on 206 electron =-206\times 1.6\times 10^{-19}C

Charge on 1 proton = -1.6\times 10^{-19}C

So charge on 161 electron =-106\times 1.6\times 10^{-19}C

So charge of the system = (-206+161)\times 1.6\times 10^{-19}C

=-72\times 10^{-19}C

5 0
3 years ago
1.Sobre a queda-livre,assinale V para verdadeiro e F para falso
lisov135 [29]

Answer:pelo o que eu sei é ..

V

V

V

F

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8 0
4 years ago
If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able
lana66690 [7]

The phenomenon which is responsible for this effect is called diffraction.

Diffraction is the ability of a wave to propagate when it meets an obstacle or a slit. When the wave encounters the obstacle or the slit, it 'bends' around it and it continues propagate beyond it. A classical example of this phenomenon is when a sound wave propagates through a wall where there is a small aperture (as in the example of this problem)

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4 years ago
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