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

Author Question: Two stars with about the same mass are found to have transiting planets with similar semi-major ... (Read 64 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 27, 2018
Two stars with about the same mass are found to have transiting planets with similar semi-major axes. Star 1 exhibits a Doppler shift twice as large as Star 2. What can we determine about these two systems?
 
  A) The planet around Star 2 is more massive than the planet around Star 1.
  B) The planet around Star 1 has a thicker atmosphere than the planet around Star 2.
  C) The planet around Star 1 is more massive than the planet around Star 2.
  D) The planet around Star 2 has a thicker atmosphere than the planet around Star 1.

Question 2

Which of the following is not an observed characteristic of the cosmic microwave background?
 
  A) It contains prominent spectral lines of hydrogen, the primary chemical ingredient of the universe.
  B) It has a perfect thermal radiation spectrum.
  C) Its temperature is a little less than 3 Kelvin (3 degrees above absolute zero).
  D) Its temperature is the same everywhere, except for small variations at the level of 1 part in 100,000.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juliaf

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 27, 2018
Wow, this really help

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

As a biochem major As a biochem major
Major Digestive Enzymes Major Digestive Enzymes
Mass Wasting Triggers Mass Wasting Triggers
Similar Rock Outcrops on Mars and Earth Similar Rock Outcrops on Mars and Earth
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
Major RNA Molecules Major RNA Molecules
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library