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

Author Question: The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this ... (Read 55 times)

plus1

  • Hero Member
  • *****
  • Posts: 676
on: Jul 27, 2018
The star named Circini has the spectral type and luminosity class of O 8.5 V. Based on this information, which of the following are true? I. Circini has a surface temperature less than the Sun. II. Circini has a diameter that is greater than that of the Sun. III. Circini is more luminous than the Sun. IV. Circini is located near the upper left-hand corner in the H-R diagram.
 
  a. I & II
  b. II & IV
  c. II, III, & IV
  d. I, II, & III
  e. I, II, III, & IV

Question 2

___________ is absorbed by ozone in Earth's atmosphere that is located between 20 km and 40 km above Earth's surface. Therefore, telescopes to observe this radiation must be placed in space.
 
  a. Infrared radiation
  b. Ultraviolet radiation
  c. Radio wave radiation
  d. X-ray radiation
  e. Visible light


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Alyson.hiatt@yahoo.com

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

b


plus1

  • Member
  • Posts: 676
Reply 2 on: Jul 27, 2018
Excellent

carlsona147

  • Member
  • Posts: 341
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Betelgeuse star (Hubble) Betelgeuse star (Hubble)
Weber's Three Components Of Social Class Weber's Three Components Of Social Class
Chylomicron Chylomicrons are one type of lipoprotein Chylomicron Chylomicrons are one type of lipoprotein
Type of pathogen organism Type of pathogen organism
For a particular cell based on the reaction:3 AgCl(s) + Al(s) → 3 Ag(s) + Al3+(aq) + 3 ... For a particular cell based on the reaction:3 AgCl(s) + Al(s) → 3 Ag(s) + Al3+(aq) + 3 ...
A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb
Video: Component of feedback systems & Communication and regulation of body systems

For a complete list of videos, visit our video library