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 57 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
Thanks for the timely response, appreciate it


rachel

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

For a complete list of videos, visit our video library