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

Author Question: In the critical density universe now proposed, the ratio of dark energy to matter is about A) 1 ... (Read 148 times)

vinney12

  • Hero Member
  • *****
  • Posts: 586
on: Jul 27, 2018
In the critical density universe now proposed, the ratio of dark energy to matter is about
 
  A) 1 to 5. B) 1 to 1. C) 10 to 1. D) 3 to 1. E) 1 to 100.

Question 2

Why can the Hubble Space Telescope give us better direct measurements of star diameters than larger Earth-based telescopes can?
 
  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

heinisk01

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

D

Answer to Question 2

Without the atmosphere and twinkling caused by turbulence, HST gives much better resolution and thus can directly image the disks of some of the giant stars, such as Betelgeuse.


vinney12

  • Hero Member
  • *****
  • Posts: 586
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


heinisk01

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

The average adult has about 21 square feet of skin.

fusion for energy fusion for energy
Tummy rock to release energy blocks in the torso and head. Tummy rock to release energy blocks in the torso and head.
Ocean Energy Ocean Energy
A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above ... A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above ...
Physics: Power, Energy and Time Physics: Power, Energy and Time
The proposed evolutionary development of the mammalian The proposed evolutionary development of the mammalian
Video: Simple and Double Sugar

For a complete list of videos, visit our video library