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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Explain why convex mirrors can only produce virtual images. Please use at least 2 content related sentences. (ref: p.471-481)

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Lead atoms occupy a volume of 3 x 10-29 m3. Each atom contributes two free electrons. Calculate the Fermi velocity of lead.

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<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:

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