« previous next »

Author Question: If a star is found by spectroscopic observations to be about 500 parsecs distant, its parallax is ... (Read 56 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?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

A comparison between chromosomes found in a normal human cell and a cancer cell from the same person A comparison between chromosomes found in a normal human cell and a cancer cell from the same person
Major types of microbial cell aggregations found in phylum Cyanobacteria. Major types of microbial cell aggregations found in phylum Cyanobacteria.
Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia. Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia.
Gravitational Lensing of Extremely Distant Galaxies Gravitational Lensing of Extremely Distant Galaxies
The greatest bone mass is found around age 30 for both men and women, with the later decline being f The greatest bone mass is found around age 30 for both men and women, with the later decline being f
Where’s the Saturated Fat in Your Foods? Saturated fat is found in animal products, tropical oils Where’s the Saturated Fat in Your Foods? Saturated fat is found in animal products, tropical oils
Video: Hemodynamics Animation

For a complete list of videos, visit our video library