« previous next »

Author Question: Which one of the words below is a name for a type of galaxy in the Hubble classification system? ... (Read 25 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
Which one of the words below is a name for a type of galaxy in the Hubble classification system?
 
  a. red giant
  b. visual
  c. spiral
  d. 21-centimeter
  e. statuesque

Question 2

As a white dwarf cools its radius will not change because
 
  a. pressure due to nuclear reactions in a shell just below the surface keeps it from collapsing.
  b. pressure does not depend on temperature for a white dwarf because the electrons are degenerate.
  c. pressure does not depend on temperature because the white dwarf is too hot.
  d. pressure does not depend on temperature because the star has exhausted all its nuclear fuels.
  e. material accreting onto it from a companion maintains a constant radius.


uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Respiratory system Respiratory system
Seyfert Galaxy NGC 1566 Seyfert Galaxy NGC 1566
Four methods of recording electrical activity of the nervous system. Four methods of recording electrical activity of the nervous system.
Effects of Spinal Cord and Autonomic System Damage Effects of Spinal Cord and Autonomic System Damage
Effects of the Autonomic Nervous System Effects of the Autonomic Nervous System
Chylomicron Chylomicrons are one type of lipoprotein Chylomicron Chylomicrons are one type of lipoprotein
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library