« previous next »

Author Question: Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at the same time ... (Read 56 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
on: Jul 27, 2018
Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at the same time after the Big Bang, which galaxy appears to us as the youngest?
 
  A) the galaxy that is furthest from us
  B) the galaxy that is closest to us
  C) the galaxy that appears bluest to us
  D) the galaxy that appears largest to us
  E) All galaxies would appear to have the same age.

Question 2

One light-hour is the distance that light travels in an hour. How far is this, in kilometers? (Recall that the speed of light is 300,000 km/s.)
 
  A) 1.08 billion km
  B) 18 million km
  C) 100 million km
  D) 300,000 km
  E) 9.46 trillion km


onowka

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


onowka

  • Sr. Member
  • ****
  • Posts: 353
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Photograph of a brain specimen with a large malignant tumor. Photograph of a brain specimen with a large malignant tumor.
Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and
Distant Galaxies Distant Galaxies
Insecticide application over time Insecticide application over time
Time-of-entry mapping Time-of-entry mapping
The Hfr chromosome time-of-entry map is assembled from the recombinant data The Hfr chromosome time-of-entry map is assembled from the recombinant data
Video: Prone Position

For a complete list of videos, visit our video library