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 54 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
Thanks for the timely response, appreciate it

chjcharjto14

  • Member
  • Posts: 342
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Faulty outlooping produces lambda phage containing bacterial DNA Faulty outlooping produces lambda phage containing bacterial DNA
Size comparison of Earth and Mars. Size comparison of Earth and Mars.
FIRST PICTURE OF MARS FIRST PICTURE OF MARS
All organs are organized arrangements of various tissues All organs are organized arrangements of various tissues
Retrograde and anterograde amnesia Retrograde and anterograde amnesia
Retrograde Motion of Mars Retrograde Motion of Mars
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library