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3 years ago

In what ways are the fate of the universe, the shape of the universe, and the average density of the universe related

1 answer:

5 0

Based on our science, the universe could have three possible shapes dependant on the amount of matter in it, the matter affects the curvature of the universe, linked to its shape and geometry. For example, a closed Universe will have a positive curvature, meaning that the average density is more than the critical density. An open universe, on the other hand, would have a negative curvature, and therefore the qaverage density would be less than the critical density. A flat universe would have no curvature and the average density would be equal to the critical density. These shapes relate to the fate of the universe, a closed universe would be finite, an open universe would be infinite and a flat universe would be infinite with no curve.

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Where did the earths surface water come from?

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Answer:

Explanation:

There are two dominant theories:

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3 years ago

If a sound pulse is sent vertically downward into the sea and its reflected echo from the seafloor returns 6 seconds later, the

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Answer: 4500 metres

Explanation:

Echo is a reflection of sound wave. It is the sound heard after it has been reflected off the surface of a wall or cliff.

Time = 6 seconds

Speed of sound in water = 1500m/s

distance =?

From the relationship ;

Speed = distance / time

Distance = speed * time

Distance = 1500 * 6 = 9000 metres

Distance here represents the total distance traveled by the pulse that is distance to the seafloor and back to the surface.

Therefore the depth of the water is given by;

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