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

Author Question: Stellar spectra tell us that ________ is the second most abundant element in the Sun. A) carbon ... (Read 45 times)

xclash

  • Hero Member
  • *****
  • Posts: 681
on: Jul 27, 2018
Stellar spectra tell us that ________ is the second most abundant element in the Sun.
 
  A) carbon B) helium C) iron D) hydrogen E) oxygen

Question 2

On what basis are we sure that no quasar is lurking among the thousands of member galaxies in the Virgo Cluster, 18 Mpc distant?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

britb2u

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

Quasars are far more luminous visually than normal galaxies, so at that distance, a quasar would be bright enough to see with the naked eye The distance to the closest quasar is still more than a 100 Mpc.


xclash

  • Member
  • Posts: 681
Reply 2 on: Jul 27, 2018
:D TYSM

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger
Carbon Dioxide Phase Diagram Carbon Dioxide Phase Diagram
Non-Carbon Organic Molecules? Non-Carbon Organic Molecules?
HNMR spectra HNMR spectra
Stable isotopes of carbon Stable isotopes of carbon
Calculate the atomic mass of element Calculate the atomic mass of element
Video: Bone tissue types - compact and spongy

For a complete list of videos, visit our video library