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Andrew [12]
4 years ago
15

What shape is the unit cell of ruby?

Physics
1 answer:
sleet_krkn [62]4 years ago
7 0
Ruby, a variety of the mineral corundum is in the trigonal crystal system, with hexagonal scalenohedra crystals
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A 35-gram stainless steel ball on a track is moving at a velocity of 9 m/s. On the same track, a 75-gram stainless steel ball is
elena-s [515]

Answer:

4.2 m/s

Explanation:

Momentum is conserved.

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(35 g) (9 m/s) + (75 g) (-7 m/s) = (35 g) (-15 m/s) + (75 g) v

315 g m/s − 525 g m/s = -525 g m/s + (75 g) v

315 g m/s = (75 g) v

v = 4.2 m/s

5 0
4 years ago
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A car starts from rest and accelerates uniformly over a time of 5.37 seconds for a distance of 101 m. Determine the acceleration
castortr0y [4]

Answer:

8.10m s-2

Explanation:

8 0
4 years ago
Why do many species that existed 35 million years ago no longer exist​
GenaCL600 [577]

Answer:

There are several reasons for the extinction of species. Some of these can include climate change, natural disasters, environmental destruction, or over-hunting. All of these factors can contribute to the deaths of various animals which ultimately leads to extinction if left unchecked.

Explanation:

8 0
3 years ago
Describe what happens when a plate carrying oceanic crust collides with a plate carrying continental crust.
pav-90 [236]

Answer:

Subduction occurs and a trench is formed.

Explanation:

  • When a tectonic plate carrying an oceanic crust collides with a tectonic plate carrying a continental crust then the oceanic plate will slide beneath the continental one, forming a trench.
  • This is possible because the oceanic crust is less dense than the continental crust.

Subduction is a geological phenomenon in which the tectonic plates of one crustal plate descends below the edge of the other. The region where this happens is called a subduction zone.

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3 years ago
Describe the parts of a circuit and explain what each part does?
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Battery, a wire and the nergy source.
7 0
4 years ago
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