« previous next »

Author Question: Which of the following statements is true of the spectral sequence? A) It is classified in groups ... (Read 28 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jul 27, 2018
Which of the following statements is true of the spectral sequence?
 
  A) It is classified in groups labeled A through Q.
  B) M stars are cooler and fainter than L dwarfs.
  C) Y dwarfs are a class of objects with temperatures above 500 K.
  D) O stars are the hottest, and M stars are the coolest.

Question 2

In the context of main-sequence stars, which of the following statements is true of a mass-luminosity relation?
 
  A) The main-sequence stars in a Hertzsprung-Russell diagram are not ordered according to their masses.
  B) The lowest-mass stars are the hottest and brightest main-sequence stars.
  C) It is followed by giants, supergiants, and white dwarfs.
  D) The more massive a star is, the more luminous it is.


ngr69

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

DNA Sequence DNA Sequence
A true albino squirrel. Note the pink eyes. A true albino squirrel. Note the pink eyes.
Clinical decision making for groups Clinical decision making for groups
Ratings of Perceived Contradictions in Political Statements Ratings of Perceived Contradictions in Political Statements
Sequence homology between myoglobin in humans vs. whales Sequence homology between myoglobin in humans vs. whales
Suggested sequence for palpating lymph nodes Suggested sequence for palpating lymph nodes
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library