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

Author Question: When looking for the Doppler Wobble (radial velocity changes detected due to Doppler shifts), which ... (Read 262 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Jul 27, 2018
When looking for the Doppler Wobble (radial velocity changes detected due to Doppler shifts), which mass combination is most likely to be detected?
 
  A) High mass star, high mass planet
  B) High mass star, low mass planet
  C) Low mass star, high mass planet
  D) Low mass star, low mass planet
  E) A high mass planet; the mass of the star is irrelevant.

Question 2

If dark nebulae are really dark, how do we know they are there?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jointhecircus

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

In some cases, they are not thick enough to block all light, so allow some red light through. Even if dense enough, they can still be seen in profile against rich star fields that lie behind them in the plane of the Milky Way.


ss2343

  • Member
  • Posts: 548
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

ktidd

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

In diploids, recombinants are best detected in a testcross In diploids, recombinants are best detected in a testcross
Doppler ultrasonography. Doppler ultrasonography.
Doppler Effect, Observer Moving Doppler Effect, Observer Moving
Some vehicles will display a message if an evaporative control system leak is detected that could ... Some vehicles will display a message if an evaporative control system leak is detected that could ...
Palpating the radial pulse Palpating the radial pulse
A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. ... A 500-kg cannon fires a 4.0-kg projectile with a velocity of 500 m/s relative to the ground. ...
Video: Introduction to Tuberculosis

For a complete list of videos, visit our video library