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

Author Question: Evidence that tidal interactions and collisions of galaxies may make ordinary galaxies active is ... (Read 69 times)

nummyann

  • Hero Member
  • *****
  • Posts: 576
on: Jul 27, 2018
Evidence that tidal interactions and collisions of galaxies may make ordinary galaxies active is that
 
  a. many active galaxies are distorted.
  b. some active galaxies have companions.
  c. many active galaxies are distorted and some active galaxies have companions.
  d. active galaxies are neither distorted nor have companions.

Question 2

The explosion of a supernova type II can leave behind
 
  a. a planetary nebula.
  b. a shell of hot, expanding gas with a white dwarf at the center.
  c. a shell of hot, expanding gas with a neutron star at the center.
  d. Nothing is ever left behind.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Dunkey

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

c


nummyann

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 27, 2018
Thanks


Dunkey

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

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 are 20 feet of blood vessels in each square inch of human skin.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
The Sleep/Waking Flip-Flop According to Saper et al. (2001), the major sleep-promoting region (the v The Sleep/Waking Flip-Flop According to Saper et al. (2001), the major sleep-promoting region (the v
Children make a fast adjustment to a new culture, although, as with these Hmong children in ... Children make a fast adjustment to a new culture, although, as with these Hmong children in ...
Electrostatic interactions between macroions Electrostatic interactions between macroions
cI–Cro interactions in the ORPRM region cI–Cro interactions in the ORPRM region
Experimentally acquired evidence for gene annotation Experimentally acquired evidence for gene annotation
Video: Calvin Cycle Explained!

For a complete list of videos, visit our video library