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

Author Question: The RR Lyrae stars all have periods of A) less than a second. B) several minutes. C) several ... (Read 16 times)

neverstopbelieb

  • Hero Member
  • *****
  • Posts: 534
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

FALSE


neverstopbelieb

  • Member
  • Posts: 534
Reply 2 on: Jul 27, 2018
Gracias!

ultraflyy23

  • Member
  • Posts: 312
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
All objects in the image are distant galaxies – not stars All objects in the image are distant galaxies – not stars
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
Converting Degrees, Minutes, Seconds to Degrees Converting Degrees, Minutes, Seconds to Degrees
Convert 0.4 radians to Degrees, Minutes, Seconds Convert 0.4 radians to Degrees, Minutes, Seconds
Video: Import of Dietary Glucose from Intestines to Bloodstream

For a complete list of videos, visit our video library