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 43 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?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

True-color view of Mars seen through NASA's Hubble Space Telescope in 1999 True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
Essentials of a Refracting Telescope Essentials of a Refracting Telescope
Rotating Furnace for Making Parabolic Telescope Mirrors Rotating Furnace for Making Parabolic Telescope Mirrors
Telescope Telescope
Einstein telescope. Einstein telescope.
Telescope Telescope
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library