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3 years ago

Volcanoes are formed ________. question 3 options:

1 answer:

7 0

I think the correct answer is C. Volcanoes are formed in subduction zones or in rift valleys. They are formed when hot magma within the upper mantle of the Earth would work way up the surface. As it reaches the surface, an eruption would happen forming lava flows and deposits of ash. As it continues to erupt, it would grow bigger and bigger. These would form commonly in divergence or convergence tectonic plates. On Earth, there are about 1500 volcanoes that are active. About 80 of these can be found under the oceans. The active ones are mostly found in washington, oregon, alaska, california and hawaii.

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What type of system allows matter and energy to enter and exit

ad-work [718]

Should be open system

4 0

4 years ago

A metal wire 1.50 m long has a circular cross section of radius 0.32 mm and an end-to-end resistance of 90.0 Ohms. The metal wir

elixir [45]

Answer:

So after stretching new resistance will be 0.1823 ohm

Explanation:

We have given initially length of the wire $l_1=150m$

Radius of the wire $r_1=0.32mm=0.32\times 10^{-3}m$

Resistance of the wire initially $R_1=90ohm$

We know that resistance is equal to $R=\frac{\rho l}{A}$ ,here $\rho$ is resistivity, l is length and A is area

From the relation we can say that $\frac{R_1}{R_2}=\frac{l_1}{l_2}\times \frac{A_2}{A_1}$

Now length of wire become 6.75 m

Volume will be constant

So $A_1l_1=A_2l_2$

So $\pi \times (0.32)^2\times150=\pi \times r_2^2\times 6.75$

$r_2=1.508mm$

So $\frac{90}{R_2}=\frac{150}{6.75}\times \frac{1.508^2}{0.32^2}$

$R_2=0.1823ohm$

7 0

3 years ago

In a chemical equation, numbers often appear in front of a chemical formula. What do these numbers indicate?

solong [7]

The number of molecules in each atom in the reaction.

5 0

3 years ago

The pituitary gland releases chemicals knows as:

Oksi-84 [34.3K]

C. Endorhins

Endorphins can be found in the pituitary gland, in other parts of the brain, or distributed throughout the nervous system. Stress and pain are the two most common factors leading to the release of endorphins.

Hope this helps!!!

7 0

3 years ago

Feeling guilty is normal when experiencing grief TRUE or FALSE

Anna11 [10]

Answer: The given statement is True.

Grief is a response of a person when he/she loses something. It represents intense feeling of sorrow or sadness specially when someone is lost from life.

Feeling guilty is normal when experiencing grief. For instance, guilt ( feeling ashamed) of a son not calling his dad after he is no more.

Thus, given statement is True.

3 0

3 years ago

Read 2 more answers