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 95 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?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Black River Brookie Black River Brookie
Black Locust Black Locust
This graphic illustrates the original systems model of politics advanced by David Easton. Politics This graphic illustrates the original systems model of politics advanced by David Easton. Politics
Seven black members of Congress in 1871 are from left to right: Senator Hiram Revels (R-MS) and Repr Seven black members of Congress in 1871 are from left to right: Senator Hiram Revels (R-MS) and Repr
Black hairy tongue Black hairy tongue
Black Eyed Peas - Just Can't Get Enough(Lyrics) Black Eyed Peas - Just Can't Get Enough(Lyrics)
Video: Dendrite Animation

For a complete list of videos, visit our video library