« previous next »

Author Question: It took two centuries for the Copernican model to replaced the Ptolemaic model because A) in ... (Read 79 times)

lidoalex

  • Hero Member
  • *****
  • Posts: 538
on: Jul 27, 2018
It took two centuries for the Copernican model to replaced the Ptolemaic model because
 
  A) in Copernicus' time, there were no telescopes.
  B) the Church wouldn't let anyone talk about Copernicus' model for 200 years.
  C) there was no scientific evidence to support either model until Galileo made his observations.
  D) the Ptolemaic model was simpler and more aesthetically pleasing.
  E) the Copernican model required complicated new terms to explain it correctly.

Question 2

Arcturus shows a large proper motion, almost perpendicular to the galactic plane. What Population does it belong to, and why?
 
  What will be an ideal response?


mjbamaung

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

Arcturus is the brightest Population II star in the sky, revealed by its lack of metals and its comet-like motion cutting across the galactic disk.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

lidoalex

  • Hero Member
  • *****
  • Posts: 538
Reply #2 on: Jul 27, 2018
Thank you!


mjbamaung

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

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

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Lung Model Lung Model
Elementary particles included in the Standard Model Elementary particles included in the Standard Model
A Mental Model A Mental Model
Model for translocon function Model for translocon function
Model of the purinosome Model of the purinosome
Opener Bronze sculpture of the Watson–Crick model for double-helical DNA Opener Bronze sculpture of the Watson–Crick model for double-helical DNA
Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

For a complete list of videos, visit our video library