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

Author Question: Most comets spend the majority of their time beyond the orbit of ________, yet many of them have ... (Read 42 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
on: Jul 27, 2018
Most comets spend the majority of their time beyond the orbit of ________, yet many of them have perihelions very close to the Sun.
 
  Fill in the blank(s) with correct word

Question 2

What makes us think that the star system Cygnus X-1 contains a black hole?
 
  A) It emits X-rays characteristic of an accretion disk, but the unseen star in the system is too massive to be a neutron star.
  B) No light is emitted from this star system, so it must contain a black hole.
  C) The fact that we see strong X-ray emission tells us that the system must contain a black hole.
  D) Cygnus X-1 is a powerful X-ray burster, so it must contain a black hole.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meganmoser117

  • Sr. Member
  • ****
  • Posts: 303
Reply #1 on: Jul 27, 2018
Answer to Question 1

Pluto

Answer to Question 2

A


nramada

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


meganmoser117

  • Sr. Member
  • ****
  • Posts: 303
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

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.

The Serial Reaction Time Task The Serial Reaction Time Task
If you want to show differences between items at the same time, a bar graph is more effective than a If you want to show differences between items at the same time, a bar graph is more effective than a
The injector on-time is called the pulse width. The injector on-time is called the pulse width.
Time course of HIV infection. Time course of HIV infection.
Weak bones cause the spine to collapse over time Weak bones cause the spine to collapse over time
Magnitude of Geologic Time Magnitude of Geologic Time
Video: Pores and Ion Channels

For a complete list of videos, visit our video library