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3 years ago

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A vehicle of known mass accelerates at a straight path. What caused this acceleration, according to Newton's second law of motio

n.
Well I already know the correct answer so here you go :3
The correct answer is: An unballanced force has acted on the vehicle

1 answer:

Yanka [14]3 years ago

8 0

Okay i gotchuuuuuuuuu

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The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining a

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<u>Answer:</u> The amount of sample left after 20 years is 288.522 g and after 50 years is 144.26 g

<u>Explanation:</u>

We are given a function that calculates the amount of sample remaining after 't' years, which is:

$A_t(t)=458\times (\frac{1}{2})^{\frac{t}{30}$

<u>For t = 20 years</u>

Putting values in above equation:

$A_t(t)=458\times (\frac{1}{2})^{\frac{20}{30}$

$A_t(t)=288.522g$

Hence, the amount of sample left after 20 years is 288.522 g

<u>For t = 50 years</u>

Putting values in above equation:

$A_t(t)=458\times (\frac{1}{2})^{\frac{50}{30}$

$A_t(t)=144.26g$

Hence, the amount of sample left after 50 years is 144.26 g

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4 years ago

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Answer:

An element with 7 valence electrons will most likely be a halogen and gain an electron

Explanation:

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3 years ago

Which of these molecules has an overall dipole moment? O A. F2 B. H2S C. CH4 D. CO2

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3 years ago

How many liquids are found on the periodic table?<br><br><br><br> 1

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3 years ago

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Explanation:

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3 years ago

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