« previous next »

Author Question: If a star is found by spectroscopic observations to be about 500 parsecs distant, its parallax is ... (Read 51 times)

deesands

  • Hero Member
  • *****
  • Posts: 514
on: Jul 27, 2018
If a star is found by spectroscopic observations to be about 500 parsecs distant, its parallax is
 
  A) .2.
  B) .5.
  C) .02.
  D) .002.
  E) .005.

Question 2

Orbital resonances are a characteristic of some extrasolar systems but are not seen in our solar system.
 
  Indicate whether the statement is true or false


CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

deesands

  • Hero Member
  • *****
  • Posts: 514
Reply #2 on: Jul 27, 2018
Thank you!


CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

The cotton-top tamarin (Saguinus oedipus), also known as the Pinche tamarin, is a small New W The cotton-top tamarin (Saguinus oedipus), also known as the Pinche tamarin, is a small New W
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
A crescent Moon and "star" A crescent Moon and "star"
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Using Parallax to Determine Distance Using Parallax to Determine Distance
A Rotating, Magnetized Neutron Star A Rotating, Magnetized Neutron Star
Video: Ear Animation

For a complete list of videos, visit our video library