What would happen if earth did not rotate?

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

4 years ago

An MCS is approaching! How would you expect the precipitation to evolve at your location? a. Heavy rain and thunderstorms follow

lukranit [14]

Answer: a. Heavy rain and thunderstorms followed by lighter stratiform precipitation.

Explanation:

In their order of severity, thunderstorms range from single-cell, multi-cell, squall line, supercell, bow line to Mesoscale Convective systems (MCS) . An MCS, therefore is a serious weather condition.

A Mesoscale convective system is an organized, group of thunderstorms with a wide geographical coverage and can last for hours. It can come with hail, flash floods, lake effect snow and trigger disasters such as tropical cyclones.

5 0

3 years ago

Using complete sentences, describe the economic challenges African states are facing today.

iren2701 [21]

They face problems with their economic growth and jobs. They also have problems with mining, cost of living, delivery of services and also corruption.

7 0

3 years ago

Read 2 more answers

Sandstone is a(n) ____ sedimentary rock.

LiRa [457]

Sandstone is a clastic sedimentary rock. A clastic sedimentary rock is composed of silicate minerals and rock fragments. They are transported by moving fluids such as sedimentation due to gravity and are deposited in the area where it stays. They are composed mostly of feldspar, quartz, rock (lithic) fragments, clay minerals and mica.

4 0

3 years ago

What three religions are in constant conflict over the land in the Middle East? Describe the claim of each.

Ymorist [56]

Answer:

Judaism, Christianity, and Islam are in constant conflict over the land in the Middle East.

Explanation:

The Middle East is a region that is important for many reasons, and one of them is religious importance. This area is actually the birthplace of three major religions, the so-called Abrahamic religions. The three religions that emrged in this region are Judaism, Christianity, and Islam, in that order.

Judaism came first, and what is now Israel is considered as the holy land for this religion. Despite many attempts to forcefully removing the Jews from this area, some of them still managed to survive there and many more came back in the last century to reclaim what they consider as historically theirs.

Christianity emerged from Judaism. What is now Israel is also holy to it, and especially the city of Jerusalem. The claim of the Christians for this region is that their religion emerged there and its holy places have to be in their hands and no one else.

Islam came last, emerging from Christianity. Soon it became the dominant religion in the region through conquest and assimilation. It has been dominant in the area for over a milennium, so the claim is that it is historically theirs and since they managed to conquer the place it belongs to them.

4 0

3 years ago