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3 years ago

Write a short story/letter to a friend describing the most exciting part of your own imaginary journey to Earth's centre.

Geography

1 answer:

Papessa [141]3 years ago

8 0

Answer:

DUDE ITS SO COOL HERE

i bet you can guess what i did first, ofc i drew

annndd i saw a really cool character they were showing on a BIGG TV on a building and he looked really cool, i think i can send you a

picture

yeah those being were calling that a picture

and one helped me send it to you

it wass awesomee

You might be interested in

Imagine that you have obtained spectra for several galaxies and have measured the observed wavelength of a hydrogen emission lin

Lerok [7]

Answer:

A. z (galaxy 1) = -0.00515, z (galaxy 2) = -0.01707, z (galaxy 3) = -0.04008

B. v (galaxy 1) = -0.00517c, v (galaxy 2) = -0.01707c, v (galaxy 3) = -0.0401c

C. d (galaxy 1) = -21 Mpc,d (galaxy 2) = -69.4 Mpc, d (galaxy 3) = -163 Mpc

Explanation:

We begin by listing out the parameters we were given:

λ (obsv) = 656.3 nm, λ (emit 1) = 659.7 nm, λ (emit 2) = 667.7 nm,

λ (emit 3) = 683.7 nm

A) Using the Redshift formula, we have:

z = [λ (obsv) - λ (emit)] ÷ λ (emit)

For galaxy 1:

z = [λ (obsv) - λ (emit 1)] ÷ λ (emit 1)

z = (656.3 - 659.7) ÷ 659.7 = -0.00515

z = -0.00515

For galaxy 2:

z = [λ (obsv) - λ (emit 2)] ÷ λ (emit 2)

z = (656.3 - 667.7) ÷ 667.7 = -0.01707

z = -0.01707

For galaxy 3:

z = [λ (obsv) - λ (emit 3)] ÷ λ (emit 3)

z = (656.3 - 683.7) ÷ 683.7 = -0.04008

z = -0.04008

B) Using the Doppler formula, we have:

(Δλ ÷ λ) = v ÷ c

v = c * (Δλ ÷ λ)

but, z = (Δλ ÷ λ)

⇒ v = c * z

speed of light (c) = 3 x $10^{8}$ m/s

For galaxy 1:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.00515)

v = -1.55 x $10^{6}$ m/s

v = -0.00517c

For galaxy 2:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.01707)

v = -5.12 x $10^{6}$ m/s

v = -0.01707c

For galaxy 3:

v = c * z

Substitute z into the equation calculated from A) above

v = 3 x $10^{8}$ * (-0.04008)

v = -12.03 x $10^{6}$ m/s

v = -0.0401c

N.B: the negative value of velocity connotes that the galaxies are moving away from us (not towards us)

C) Using Hubbleʹs law, we have:

v = H · d

where:

v = velocity of a galaxy (km/s), d = distance (Mpc),

H = Hubble's constant (km/s/Mpc) = 73.8 km/sec

d = v ÷ H

We use the velocities calculated in B) above

For galaxy 1:

v = -1.55 x $10^{3}$ km/s

d = -1.55 x $10^{3}$ ÷ 73.8

d = -21 Mpc

For galaxy 2:

v = -5.12 x $10^{3}$ km/s

d = -5.12 x $10^{3}$ ÷ 73.8

d = -69.4 Mpc

For galaxy 3:

v = -12.03 x $10^{3}$ km/s

d = -12.03 x $10^{3}$ ÷ 73.8

d = -163 Mpc

N.B: distance cannot be a negative value

4 0

3 years ago

Read the article and write one page arguing whether you think the European

Alexxx [7]

Answer:

I believe that The European Union is a good thing because in times of war, the countries most likely will not go to war against each other, and also because it allows the countries in the EU to become iron allies, which could prove useful in both war and times of hardship. Speaking of hardship, if any of the countries in the EU is faced with hardship or a hard decision, that country can ask the other countries in the European Union for help or for advice. And, if anybody in one of the nations within the EU travels to another country that is in the EU can use the same form of money, without the worry of having to convert it to the type of money that is used there, because every country in the European Union uses the same type of currency, the euro. For instance, if someone in, say, France, travels to maybe Greece for vacation, then that person could use the same form of money in Greece as used in France, which is a big worry taken off the mind. Plus, it gives the countries reasons why not to go to war over each other, and so they countries probably won't go to war against each other for a small reason, such as a steel mine or the sort. The European Union lets the citizens of the countries in the EU have freedom and human dignity, which is more than most countries have to offer to their citizens. The EU is a surprisingly good method of maintaining peace in the European countries, or, at least for the ones in the EU, such as Belgium, Germany, Greece, or Italy. So, in conclusion, I believe that the European Union is a good thing, for many reasons.

Explanation:

<h2>Brainlest Please!</h2>

4 0

2 years ago

Based on the data shown, which of the following describes the most likely population context for the countries listed?

Kazeer [188]

Based on the data given the table describes the population of the given countries.

The countries like Germany, Italy, and Japan are all developed nations and have aging populations.

As per the table the female and male expectancy of life and living standards are more in Japan and Italy as compared to Germany this means the stage of geographic transition where there are high living stands, low fertility.

Hence the option E is correct.

Learn more about the following describes the likely population context for the countries listed.

brainly.com/question/25091968.

7 0

2 years ago

Read 2 more answers

Which of the following statements best explains why urban centers grew during the Industrial Revolution?

Alex787 [66]

Factories and their corresponding jobs were located in cities and created economic opportunities for migrants.

7 0

3 years ago

Read 2 more answers