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MissTica
3 years ago
13

If the magma chamber beneath volcano b empties and then collapses, what kind of feature will form? explain.

Physics
2 answers:
snow_tiger [21]3 years ago
7 0

Answer: Caldera

A caldera is a volcanic form which develops by the collapse of the volcano into itself. It occurs when the magma chamber beneath the volcano gets emptied and the the area is not able to support the volcanic debris. The fractures develop in the vents of the volcanic crater.  

Goshia [24]3 years ago
3 0
<span>A large hole will form as a result of the volcano caving in. This can also be known as a caldera. The caldera is creating when the empty magma chamber of the volcano collapses.</span>
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<h3>What is virtual image?</h3>

This is referred to the opposite of a real image and cannot be obtained on a screen. It is formed from the  apparent divergent of light rays from a point  and not the actual one which is the major difference it has with a real image.

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Read more about Convex mirrors here brainly.com/question/14269744

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2 years ago
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<u>Answer:</u> The Fermi velocity of lead is 64.4 km/s.

<u>Explanation:</u>

To calculate the Fermi velocity, we use the equation:

V_f=\frac{h}{2\pi m_e}(\frac{3\pi^2N}{V})^{1/3}

where,

h = Planck's constant = 6.62\times 10^{-34}Js

m_e = mass of electron = 9.1\times 10^{-31}kg

N = Number of atoms present in per volume of atom multiplied by number of electrons present in given atom = \frac{2\times N_A\times V}{M}

N_A = Avogadro's number = 6.022\times 10^{26}mol^{-1}    (When the mass is in kilograms)

V = Volume = 3\times 10^{-29}m^3

M = molecular weight of lead = 207.2 g/mol

Putting values in above equation, we get:

V_f=\frac{6.62\times 10^{-34}}{2\times 3.14\times (9.1\times 10^{-31})}(\frac{3\times (3.14)^2\times (2\times 6.022\times 10^{23}\times 3\times 10^{-29})}{3\times 10^{-29}\times 207.2})^{1/3}

V_f=0.0644\times 10^6m/s=64.4km/s     (Conversion factor: 1 km = 1000 m)

Hence, the Fermi velocity of lead is 64.4 km/s

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