Question

14. The Lyman α line (n=2 goes to n=1 in Hydrogen), in a distant gas cloud,...

14. The Lyman α line (n=2 goes to n=1 in Hydrogen), in a distant gas cloud, is observed at a wavelength of 212 nm. The Hubble Expansion of the universe implies that distant objects are moving away from us with the velocity v = H0d where H0 = 67.7 km/s per Mpc (Megaparsec). What is the distance to that gas cloud?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
(a) Galaxies emit electromagnetic radiation from the transition of electrons between different atomic orbits in hydrogen....
(a) Galaxies emit electromagnetic radiation from the transition of electrons between different atomic orbits in hydrogen. One such transition is called the Lyman-α transition. When this transition occurs in hydrogen in the lab it produces light with wavelength λemit = 121.567 nm. This transition has been observed in one of the most distant objects ever seen, called a quasar. The observed wavelength of the Lyman-α transition from the quasar is λobs = 866.0 nm. What is the redshift of the...
3/ which of the following stellar properties is the most fundamental to a star’s main-sequence and...
3/ which of the following stellar properties is the most fundamental to a star’s main-sequence and post-main sequence life? A/ temperature B/ mass C/ luminosity D/ radius 4/ Stars Moppit and Boppit orbit each other as members of a binary star system. Their period of rotation about their combined centre of mass is 10 years. The semi-major axis of Boppit’s orbit around the centre of mass is 15.25 AU. What is the combined mass of Moppit and Boppit? A/ Mmoppit...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT