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

Author Question: The RR Lyrae stars all have periods of A) less than a second. B) several minutes. C) several ... (Read 61 times)

neverstopbelieb

  • Hero Member
  • *****
  • Posts: 534
The RR Lyrae stars all have periods of
 
  A) less than a second.
  B) several minutes.
  C) several hours.
  D) several days.
  E) several weeks.

Question 2

At decoupling, the electrons and protons were made from neutron decay.
 
  Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aliotak

  • Sr. Member
  • ****
  • Posts: 326
Answer to Question 1

C

Answer to Question 2

FALSE




neverstopbelieb

  • Member
  • Posts: 534
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Excellent

 

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library