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

Author Question: Describe what produces the retrograde motion of Mars. What geometric arrangements did Ptolemy use to ... (Read 86 times)

EY67

  • Hero Member
  • *****
  • Posts: 531
on: Jul 14, 2018
Describe what produces the retrograde motion of Mars. What geometric arrangements did Ptolemy use to explain this motion?
 
  What will be an ideal response?

Question 2

Why are some satellites described as being stationary?
 
  A) Their orbital motion matches the earth's rotation and stay above the same site.
  B) They can only observe stationary weather systems.
  C) They have no orbital motion.
  D) They orbit over the earth's poles.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

iceage

  • Guest
Reply #1 on: Jul 14, 2018
Answer to Question 1

The retrograde motion of Mars is due to Earth having a faster orbital speed than Mars. From the point of view of a stationary Earth, Mars appears to move backward, or retrograde. Ptolemy described this motion geometrically by proposing that the planets orbited on small circles (epicycles) revolving on large circles (deferents).

Answer to Question 2

A


EY67

  • Member
  • Posts: 531
Reply 2 on: Jul 14, 2018
Excellent

Liamb2179

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth
Configurations of geometric isomers Configurations of geometric isomers
A Piece of Mars on Earth A Piece of Mars on Earth
How lateral inhibition produces contrast enhancement. (Based on Ratliff, 1972.) How lateral inhibition produces contrast enhancement. (Based on Ratliff, 1972.)
Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ... Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ...
Describe the development of atherosclerosis, including its role in the risk of heart disease Describe the development of atherosclerosis, including its role in the risk of heart disease
Video: Interpreting a cladogram Animation

For a complete list of videos, visit our video library