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

Author Question: Absolute visual magnitude is the: A) apparent magnitude of a star observed from Earth. B) ... (Read 182 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 27, 2018
Absolute visual magnitude is the:
 
  A) apparent magnitude of a star observed from Earth.
  B) luminosity of a star observed from a distance of 1000 pc.
  C) apparent magnitude of a star observed from a distance of 10 pc.
  D) luminosity of a star observed from Earth.

Question 2

Which of the following statements is true of the main sequence region of a Hertzsprung-Russell (H-R) diagram?
 
  A) It runs from the right edge of the diagram to the left edge.
  B) It includes only 10 percent of all normal stars.
  C) The hot main-sequence stars are more luminous than the cool main-sequence stars.
  D) The stars that are not on the main sequence have the same nuclear reactions as the main-sequence stars.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nathang24

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


washai

  • Hero Member
  • *****
  • Posts: 523
Reply #2 on: Jul 27, 2018
Thank you!


nathang24

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Lightning on Earth Lightning on Earth
Visual tracking of a pendulum by a normal control subject (top) and three schizophrenics. (Adapted ... Visual tracking of a pendulum by a normal control subject (top) and three schizophrenics. (Adapted ...
Earth Atmosphere Earth Atmosphere
Earth’s Lithospheric Plates Earth’s Lithospheric Plates
Formation of the Early Earth Formation of the Early Earth
Black Hole and Companion Star Black Hole and Companion Star
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library