« previous next »

Author Question: If a star has a parallax of 0.05, then its distance in light-years is about A) 6.4 light-years. ... (Read 233 times)

fnuegbu

  • Hero Member
  • *****
  • Posts: 539
on: Jul 27, 2018
If a star has a parallax of 0.05, then its distance in light-years is about
 
  A) 6.4 light-years.
  B) 12.7 light-years.
  C) 20 light-years.
  D) 65 light-years.
  E) 100 light-years.

Question 2

How is a technical civilization defined?
 
  A) a civilization that can avoid self-destruction for long periods
  B) a civilization that can communicate over interstellar distances
  C) a civilization that has the ability to store and process information
  D) a civilization that has developed interplanetary space travel
  E) a civilization that can construct tools out of raw materials


welcom1000

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Circumpolar Star Trails Circumpolar Star Trails
pupil light reaction pupil light reaction
A Summary of the Star Formation Process A Summary of the Star Formation Process
Shifts between Warm and Cold Periods during the Last 3 Million Years Shifts between Warm and Cold Periods during the Last 3 Million Years
Light penetration in Rivers Light penetration in Rivers
Stepwise approach for managing asthma in adults and patients 12 years and older. Stepwise approach for managing asthma in adults and patients 12 years and older.
Video: Import of Dietary Glucose from Intestines to Bloodstream

For a complete list of videos, visit our video library