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agasfer [191]
3 years ago
9

Columnar joints form when ________.

Physics
1 answer:
vagabundo [1.1K]3 years ago
5 0

Answer:

b. during the final stages of cooling, a lava flow contracts, forming tall polygonal fractures

Explanation:

The columnar joints are very interesting and attractive for the eye geological features. They are not very common feature which makes them even more interesting. Some of them have been covered by sediments so they are hidden below the surface, but some have remained above the surface, sticking out as the erosion acts much slower on them than the surrounding area. They form when the lava cools off very quickly at its final stages, thus starting to contract, and instead of being smooth, they become polygonal fractures that are very tall.

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Rzqust [24]

Given

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v2 (velocity of the second object): ?

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The law of conservation of momentum states that when two bodies collide with each other, the momentum of the two bodies before the collision is equal to the momentum after the collision. This can be mathemetaically represented as below:

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Momentum before collision= momentum after collision.

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