« previous next »

Author Question: Simple observations of the darkness of the night sky and the redshifts of the galaxies tell you ... (Read 49 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
on: Jul 27, 2018
Simple observations of the darkness of the night sky and the redshifts of the galaxies tell you that:
 
  A) the Universe is contracting.
  B) the Universe must have an edge.
  C) the Universe is perfect and unchanging.
  D) the Universe must have had a beginning.

Question 2

The _____ is the average density of the Universe needed to make its curvature flat.
 
  A) relative density
  B) arithmetic density
  C) nuclear density
  D) critical density


shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
Oldowan tools are simple flake tools struck from a core. Oldowan tools are simple flake tools struck from a core.
(A) Fibula and tibia communited fracture. (B) Simple, tranverse fracture. (C) Open fracture of the ... (A) Fibula and tibia communited fracture. (B) Simple, tranverse fracture. (C) Open fracture of the ...
How to calculate simple interest (Part 5; r = I/Pt) How to calculate simple interest (Part 5; r = I/Pt)
A Simple Demonstration of Osmosis A Simple Demonstration of Osmosis
Video: Inflammation and Fever

For a complete list of videos, visit our video library