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

Author Question: The objective and the eyepiece of a refracting astronomical telescope have focal lengths of 320 cm ... (Read 7 times)

MirandaLo

  • Hero Member
  • *****
  • Posts: 538
on: Jul 29, 2018
The objective and the eyepiece of a refracting astronomical telescope have focal lengths of 320 cm and 4.0 cm, respectively.
 
  The telescope is used to view Neptune and the final image is set at infinity. The diameter of Neptune is 4.96  107 m, and its distance from Earth at the time of observation is 4.4  1012 m. What is the angle (in milliradians) subtended by the final telescopic image of Neptune?
  A) 0.90 mrad
  B) 1.1 mrad
  C) 1.3 mrad
  D) 1.5 mrad
  E) 1.7 mrad

Question 2

Atomic nuclei that are all isotopes of an element all have the same
 
  A) number of nucleons.
  B) mass.
  C) number of protons.
  D) number of neutrons.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

macagn

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


MirandaLo

  • Hero Member
  • *****
  • Posts: 538
Reply #2 on: Jul 29, 2018
Thank you!


macagn

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th Taken by Hinode's Solar Optical Telescope on January 12, 2007, this image of the Sun reveals th
Essentials of a Refracting Telescope Essentials of a Refracting Telescope
The Largest Refracting Telescope The Largest Refracting Telescope
Galileo and Galilean Telescope Galileo and Galilean Telescope
Telescope Telescope
Einstein telescope Einstein telescope
Video: Plant Defense Mechanisms from Pathogens

For a complete list of videos, visit our video library