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

Author Question: The first confirmed black hole, Cygnus X-1, was regarded as proof that black holes exist because it ... (Read 79 times)

SGallaher96

  • Hero Member
  • *****
  • Posts: 509
on: Jul 27, 2018
The first confirmed black hole, Cygnus X-1, was regarded as proof that black holes exist because it
 
  a. is a compact object in a binary system
 b. emits X-rays from a hot accretion disk
 c. is accreting matter from a main-sequence companion
 d. has a period of 5.6 days
 e. has a mass of ten solar masses

Question 2

Kepler's laws of planetary motion were _____ because he could not provide an explanation for his conclusions.
 
  a. unnatural
 b. empirical
 c. hypothetical
  d. principles
 e. assumptions


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

b


SGallaher96

  • Hero Member
  • *****
  • Posts: 509
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Black flies are blood-sucking insects who vector disease, like River Blindness, while feeding on hum Black flies are blood-sucking insects who vector disease, like River Blindness, while feeding on hum
The black-and-white colobus is an African colobine. The black-and-white colobus is an African colobine.
To test for a leak, this tester was set to the 0.020 inch hole and turned on. The ball rose in the ... To test for a leak, this tester was set to the 0.020 inch hole and turned on. The ball rose in the ...
Trig Proof Trig Proof
Trig Proof Trig Proof
Black-tailed Prairie Dog (Cynomys ludovicianus). Black-tailed Prairie Dog (Cynomys ludovicianus).
Video: Cellular slime mold life cycle Animation

For a complete list of videos, visit our video library