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3 years ago

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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UkoKoshka [18]

Answer:

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Explanation:

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$E_g=m*g*h$

because all the energy was transformed Eg=Ee

$h=\frac{0.081J}{9.8m/s^2*m}$

searching the web, the mass of a ping pong ball is 2.7 gr in average. so:

$h=\frac{0.081J}{9.8m/s^2*(2.7*10^{-3}kg)}\\h=3.1m$

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3 years ago

if the kinetic and potential energy in a system or equal to the potential energy increases what happens as a result

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Explanation:

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3 years ago

"Two long parallel wires 24.0 cm apart carry currents of 3.0 A and 8.0 A in the same direction. How far from the wire carrying 3

avanturin [10]

Answer:

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Explanation:

Let the distance from the wire carrying 3 A current is x

Then the distance from the the carrying current 8 A is 24-x

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It is given that magnetic field is zero at some distance so

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3 years ago

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3 years ago

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Katena32 [7]

Answer:

8 time increase in K.E.

Explanation:

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3 years ago