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

Author Question: How is a luminosity class assigned to a star? a. by combining the apparent magnitude with the ... (Read 51 times)

Medesa

  • Hero Member
  • *****
  • Posts: 507
on: Jul 27, 2018
How is a luminosity class assigned to a star?
 
  a. by combining the apparent magnitude with the star's parallax
  b. by measuring the period of variability in the star's apparent magnitude
  c. by studying the absorption line width in the spectrum of the star
  d. by observing the angular size of the star's image in a photograph or digital image

Question 2

The largest single-dish radio telescope is
 
  a. suspended on cables in a valley.
  b. buried deep in a mine underground.
  c. orbiting in space.
  d. suspended from balloons in the upper atmosphere.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #1 on: Jul 27, 2018
Answer to Question 1

c
RATIONALE: Line broadening is associated with line width.

Answer to Question 2

a


Medesa

  • Member
  • Posts: 507
Reply 2 on: Jul 27, 2018
Wow, this really help

lindahyatt42

  • Member
  • Posts: 322
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

These older adults are participating in an exercise class at their assisted-living facility These older adults are participating in an exercise class at their assisted-living facility
Mass Loss from a Supermassive Star Mass Loss from a Supermassive Star
Sociologists use income, education, and occupational prestige to measure social class. For most ... Sociologists use income, education, and occupational prestige to measure social class. For most ...
Common Combining Terms Common Combining Terms
Sea Star Body Plan Sea Star Body Plan
Video: Oogenesis Animation

For a complete list of videos, visit our video library