This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: When excited electrons decay to ground state, hydrogen emits along distinctive line near the visible ... (Read 86 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Feb 28, 2020
When excited electrons decay to ground state, hydrogen emits along distinctive line near the visible red. An astronomer observes what appear to be hydrogen emission lines from a distant star but they are in the infrared spectral band. She concludes ________.
◦ the star must be moving very fast away from Earth
◦ the star's hydrogen emission must be being absorbed by water in the atmosphere, which then re-emits in the infrared
◦ her instrument needs to be recalibrated
◦ the star must be moving very fast toward Earth
Earth Science ¦ Tarbuck, Lutgens, Tasa ¦ 15th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jazziefee on Feb 28, 2020

bookworm410

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly


jazziefee

  • Member
  • Posts: 505
Reply 2 on: Feb 28, 2020
Excellent

amynguyen1221

  • Member
  • Posts: 355
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

(A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend (A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend
Bohr Model of Hydrogen Atom Bohr Model of Hydrogen Atom
(a) Uranium series dating uses the decay chain of radioactive uranium to stable lead. (a) Uranium series dating uses the decay chain of radioactive uranium to stable lead.
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ... The decay constant of radon-222 is 0.181 d-1. If a sample of radon initially contains 6.00 × ...
Video: Fertilization and Development

For a complete list of videos, visit our video library