« previous next »

Author Question: Rigel has an apparent magnitude of + 0.18 and Betelgeuse an apparent magnitude of +0.45. What can ... (Read 62 times)

jenna1

  • Hero Member
  • *****
  • Posts: 568
on: Jul 27, 2018
Rigel has an apparent magnitude of + 0.18 and Betelgeuse an apparent magnitude of +0.45. What can you conclude from this?
 
  A) Betelgeuse must be closer to Earth.
  B) Rigel is brighter than Betelgeuse.
  C) Rigel must be closer to Earth.
  D) Betelgeuse is brighter than Rigel.
  E) Both stars are brighter than the full moon.

Question 2

An advantage a reflector has over a refractor is the elimination of ________.
 
  Fill in the blank(s) with correct word


AmberC1996

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

chromatic aberration.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Your heart beats over 36 million times a year.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Betelgeuse is a semiregular variable star Betelgeuse is a semiregular variable star
Apparent motion of Alpha Centauri relative to Beta Centauri Apparent motion of Alpha Centauri relative to Beta Centauri
Looking toward the sky around Orion from Alpha Centauri with Sirius near Betelgeuse and the Sun betw Looking toward the sky around Orion from Alpha Centauri with Sirius near Betelgeuse and the Sun betw
Find the magnitude and the direction of the resultant vector of the two vectors below: Find the magnitude and the direction of the resultant vector of the two vectors below:
Find the magnitude and the direction of the resultant vector of the vectors below. Find the magnitude and the direction of the resultant vector of the vectors below.
Find the magnitude and the direction of the resultant vector of the vectors below. Find the magnitude and the direction of the resultant vector of the vectors below.
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library