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

Author Question: Which of the following is not a conserved quantity? A) energy B) momentum C) angular momentum ... (Read 85 times)

pane00

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
Which of the following is not a conserved quantity?
 
  A) energy
  B) momentum
  C) angular momentum
  D) radiation

Question 2

In 1924, Edwin Hubble proved that the Andromeda Galaxy lay far beyond the bounds of the Milky Way, thus putting to rest the idea that it might have been a cloud within our own galaxy. How was he able to prove this?
 
  A) He proved this by observing individual Cepheid variable stars in Andromeda and applying the period-luminosity relation.
  B) He was able to measure the parallax of the Andromeda Galaxy.
  C) He found that the universe is expanding, and therefore concluded that Andromeda must lie outside our own galaxy.
  D) He was the first person ever to look through a telescope at the object we now call the Andromeda Galaxy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ecox1012

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


pane00

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Environmental Energy Flow Environmental Energy Flow
Energy pathways Energy pathways
Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ... Thumb, knuckle slides, and kneading (as appropriate) to energy meridians in the upper arm in 5 ...
Pyramids of energy, biomass, and numbers Pyramids of energy, biomass, and numbers
The mitochondrion is the center of energy transformation in the cell The mitochondrion is the center of energy transformation in the cell
ATP, an important energy currency in cells ATP, an important energy currency in cells
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library