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lyudmila [28]
3 years ago
11

CaCO3 is a compound found in cement. Which of the following elements are in CaCO3? calcium carbon oxygen nitrogen copper

Physics
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

CaCo3 contains carbon, oxygen and calcium.

Explanation:

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A stone is thrown straight downward with a speed of 20 m/s from the top of a tall building. If the stone strikes the ground 3.0
Lady_Fox [76]
Do you remember this formula for the distance traveled while accelerated ?

<u>Distance = (initial speed) x (t)  plus  (1/2) x (acceleration) x (t²)</u>

I think this is exactly what we need for this problem.

initial speed = 20 m/s down
acceleration = 9.81 m/s² down
t = 3.0 seconds

Distance down = (20) x (3)  plus  (1/2) x (9.81) x (3)²

Distance = (60)  plus  (4.905) x (9)

Distance = (60)  plus  (44.145)  =  104.145 meters

Choice  <em>D)</em>  is the closest one.
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3 years ago
Which process is involved in the formation of a galaxy
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SUN

Explanation:

EARTH

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There are 11 steps one should follow when shooting <br>true or false<br>(Archery)​
kkurt [141]

Answer:

true

Explanation:

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3. Set Draw Hand

4. Set Bow Hand

5. Pre-Draw

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What does biological pest control involve?
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3 years ago
21) The distance between crest and the adjacent trough of water wave is 3m They pass a given point
eimsori [14]

Answer:

1.67m

5m/s

Explanation:

Given parameters:

Wavelength of the wave = 3m

Speed of the wave  = 5m/s

Unknown:

Frequency of the wave  = ?

Speed of the water waves  = ?

Solution:

The distance between crest and the adjacent trough of water waves is known as the wavelength of a wave.

  To find the frequency ;

         V = f∧

V is the speed of the wave

f is the frequency

∧ is the wavelength

   Insert the parameters and find the frequency;

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The rate at which the wave passed a given point is the speed of the wave and it is 5m/s

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