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

Author Question: The density wave theory explains spurs and branches along the spiral arms. a. True b. False ... (Read 57 times)

Diane

  • Hero Member
  • *****
  • Posts: 576
on: Jul 27, 2018
The density wave theory explains spurs and branches along the spiral arms.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

A spectral line produced in the atmosphere of a star may be seen as broad whereas interstellar _______________ lines are very narrow.
 
  a. absorption b. continuous
  c. emission d. All of the other choices are correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jordangronback

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 27, 2018
Answer to Question 1

False

Answer to Question 2

a


Diane

  • Member
  • Posts: 576
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

emsimon14

  • Member
  • Posts: 344
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Wave Rock Formation Wave Rock Formation
An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified. An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified.
Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ... Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ...
Cross-arm stretch with head in forward flexion. With your arms crossed, place one hand on each ... Cross-arm stretch with head in forward flexion. With your arms crossed, place one hand on each ...
molecular orbital theory molecular orbital theory
Physics - Density, Pressure, and Pascal's Principle Physics - Density, Pressure, and Pascal's Principle
Video: Splitting of Sugar, Oxidation/ Reduction & ATP Generation

For a complete list of videos, visit our video library