This topic contains a solution. Click here to go to the answer

Author Question: How and why would the noon Sun appear different to an observer on Mercury compared to one on Earth? ... (Read 33 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
How and why would the noon Sun appear different to an observer on Mercury compared to one on Earth?
 
  What will be an ideal response?

Question 2

The redshift of the galaxies is correctly interpreted as
 
  A) the differences in temperatures and star formation in old and young galaxies.
  B) a Doppler shift due to the random motions of galaxies in space.
  C) an aging of light as gravity weakens with time.
  D) space itself is expanding with time, so the photons are stretched while they travel through space.
  E) placing our Galaxy near the center of the Local Group.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anna

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

Mercury's rotation axis is almost perpendicular to its orbit. This means the angle of the Sun with the southern (or northern) horizon never changes. On Mercury, an observer at the equator would always see the noon Sun overhead, an observer at the pole would always see it on the horizon. On Earth, the altitude of the Sun changes over the year because of the 23.5 degree axial tilt.

Answer to Question 2

D




dakota nelson

  • Member
  • Posts: 604
Reply 2 on: Jul 27, 2018
:D TYSM


pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Excellent

 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

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

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

For a complete list of videos, visit our video library