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

Author Question: An emission nebula appears primarily ________ in color, due to ionized hydrogen. Fill in the ... (Read 84 times)

Chelseaamend

  • Hero Member
  • *****
  • Posts: 545
on: Jul 27, 2018
An emission nebula appears primarily ________ in color, due to ionized hydrogen.
 
  Fill in the blank(s) with correct word

Question 2

In what manner have astronomers and physicists made tests to confirm that Einstein's theory of general relativity is actually a proper description of gravitational phenomena?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sammyo

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

red

Answer to Question 2

A number of tests have confirmed Einstein's theory of general relativity. The first two, as mentioned in the text, are the deflection of starlight near the Sun during a total solar eclipse and the precision of the orbit of Mercury. In both cases, general relativity accurately predicted what was observed and could not be explained using classical physics. We have also observed gravitational redshift in the starlight given off by dense objects such as white dwarfs and neutron stars.


Chelseaamend

  • Member
  • Posts: 545
Reply 2 on: Jul 27, 2018
Excellent

sailorcrescent

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Red-Green Color Blindness Is a Sex-Linked Trait in Humans Red-Green Color Blindness Is a Sex-Linked Trait in Humans
(A) The name and shape of the adult teeth. These teeth represent those found in the right side of th (A) The name and shape of the adult teeth. These teeth represent those found in the right side of th
Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor
Language and Color Perception Language and Color Perception
Incomplete dominance in snapdragon flower color. Red-flowered snapdragons crossed with white-flowere Incomplete dominance in snapdragon flower color. Red-flowered snapdragons crossed with white-flowere
People who are color-blind see colors differently. (a) Those with normal vision see the red leaves. People who are color-blind see colors differently. (a) Those with normal vision see the red leaves.
Video: HIV replication/ Replication cycle of HIV

For a complete list of videos, visit our video library