« previous next »

Author Question: ___________ is (are) observed when light from a distant quasar travels past a massive galaxy between ... (Read 73 times)

fbq8i

  • Hero Member
  • *****
  • Posts: 527
on: Jul 27, 2018
___________ is (are) observed when light from a distant quasar travels past a massive galaxy between us and the quasar, and this light is focused to form two or more images of the same quasar.
 
  a. A double-lobed radio galaxy
  b. Superluminal expansion
  c. The gravitational lens effect
  d. A blazar
  e. Gravitational waves

Question 2

If the stars at the turnoff point of a cluster have a mass of 3M, what is the age of the cluster?
 
  a. 3.01010 years
  b. 3.3109 years
  c. 6.4108 years
  d. 1.61011 years
  e. The age of a star cluster cannot be determined from the mass of stars at the turnoff point.


mfedorka

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung. Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung.
How a photosystem harvests light. How a photosystem harvests light.
(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive (A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
Chris Burden, Urban Light. Chris Burden, Urban Light.
Le Youth & Lane 8 - I Will Leave A Light On feat. Jyll (Sultan + Shepard Remix) Le Youth & Lane 8 - I Will Leave A Light On feat. Jyll (Sultan + Shepard Remix)
Video: Hormones and the menstrual cycle Animation

For a complete list of videos, visit our video library