« previous next »

Author Question: Simple observations of the darkness of the night sky and the redshifts of the galaxies tell you ... (Read 55 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?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Simple transposable elements and their mechanism of transposition Simple transposable elements and their mechanism of transposition
Giant Elliptical Galaxies Giant Elliptical Galaxies
Gravitational Lensing of Extremely Distant Galaxies Gravitational Lensing of Extremely Distant Galaxies
Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another. Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
(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 ...
People with night eating syndrome may consume more than half their day's calories between 8 pm ... People with night eating syndrome may consume more than half their day's calories between 8 pm ...
Video: Facilitated Diffusion - Glucose transport

For a complete list of videos, visit our video library