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3 years ago

13

Igneous rocks formed on or near Earth’s surface are considered

2 answers:

Vikentia [17]3 years ago

8 0

Answer:

Extrusive igneous rock

Explanation:

The igneous rocks that are crystallized on the earth's surface are commonly known as the extrusive igneous rock. These rocks are characterized by the presence of fine-grained crystals which is due to the rapid cooling of the magma, as it does not get enough time for the crystals to form. These are also sometimes comprised of volcanic glasses.which are formed on the surface due to the eruption of volcanoes.

When the hot intruding magma crystallizes below the earth's surface, then it is called intrusive igneous rocks. For example, granite, diorite and gabbro.

On the other hand, when the hot uprising magma crystallizes on or near the earth's surface, then it is known as extrusive igneous rocks. For example, basalt, rhyolite and andesite.

-BARSIC- [3]3 years ago

4 0

Extrusive <span>igneous rocks

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Answer:

$\left |F\right | =0.298\ N$

Explanation:

Data provided:

Charge on the glass rod, Q = 0.680 μC = 0.680 × 10⁻⁶ C

Charge on the silk cloth, q = 0.590 μC = - 0.590 × 10⁻⁶ C

Distance between glass rod and the silk cloth, r = 11.0 cm = 0.11 m

now,

The force between (F) the charges is given as:

$\left |F\right |=\frac{kQq}{r^2}$

where,

k is the Coulomb's constant = 9 × 10⁹ N.m²/C²

on substituting the respective values, we get

$\left |F\right | =\left |\frac{9\times10^9\times0.680\times10^{-6}\times(-0.590\times10^{-6})}{0.11^2}\right |$

or

$\left |F\right | =0.298\ N$

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Answer:

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Explanation:

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