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RoseWind [281]
3 years ago
10

Which are the simplest pure substances that cannot be broken down into any other substances

Physics
1 answer:
Veseljchak [2.6K]3 years ago
6 0
The simplest pure substances that cannot be broken down into any other substances are elements, such as gold (Au) or oxygen (O).
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Many particles, such as dust, are inhaled when people breathe. Which part of the respiratory system filters out the majority of
sergey [27]

Answer:

A: Nose

Explanation:

Because your nose has mucus covered hairs that catch some of the dust particles that you inhale.

8 0
3 years ago
Two forces of 8N and 10N CANNOT give a resultant of<br><br> a. 1 N<br> b. 2 N<br> c. 9 N<br> d. 18 N
Lelechka [254]

Answer:

I believe it is D

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Which pattern do you find easy to conduct?​
Brut [27]
  • <em>The numbers represent the beats in each measure</em>
  • <em>The arrows represent the direction of movement between beats</em>
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3 years ago
A spacecraft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force
Alexeev081 [22]

Answer:

This distance is measured from the center of the earth   r = 3.4 10⁸ m

Explanation:

The equation for gravitational attraction force is

      F = G m1 m2 / r²

Where g is the universal gravitation constant, m are the masses of the body and r is the distance between them, remember that this force is always attractive

Let's write the sum of force on the ship and place the condition that is balanced

    F1 -F2 = 0

    F1 = F2

Let's write this equation for our case

   G m Me / r² = G m Mm / (r'.)²

   

The distance r is measured from the center of the earth and the distance r' is measured from the center of the moon,

   

      r' = 3.85 10⁸ m

Let's simplify and calculate the distance

     Me / r² = Mm / / (3.85 108- r)²

     Me / Mm (3.85 108- r)² = r²

     √ 81.4 (3.85 108 -r) = r

     √ 81.4  3.85 108 = r (1 + √ 81.4)

     34.74 108 = r (10.02)

     r = 34.74 10⁸ / 10.2

     r = 3.4 10⁸ m

This distance is measured from the center of the earth

6 0
4 years ago
What happens when a sample of water turns to ice
TiliK225 [7]

\huge{\underline{\underline{\mathrm{\color{red}{AnswEr}}}}}

As a sample of water turns to ice, A new molecules are formed.

5 0
3 years ago
Read 2 more answers
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