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

Author Question: Two stars have apparent magnitudes of 0 and 5. If both stars are 117 parsecs away, which star is ... (Read 100 times)

student77

  • Hero Member
  • *****
  • Posts: 567
on: Jul 27, 2018
Two stars have apparent magnitudes of 0 and 5. If both stars are 117 parsecs away, which star is intrinsically brighter and by what factor is it brighter than the other?
 
  What will be an ideal response?

Question 2

After a supernova explosion, the remains of the stellar core
 
  A) will always be a neutron star.
  B) be either a neutron star or a black hole.
  C) will always be a black hole.
  D) may be either a white dwarf, neutron star, or black hole.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jordangronback

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 27, 2018
Answer to Question 1

Since both stars are at the same distance (it does not matter what the distance is), the magnitude 0 star is the brightest. It is intrinsically 100 times brighter than the magnitude 5 star because 5 magnitudes is always a factor of 100 in intrinsic brightness.

Answer to Question 2

B


student77

  • Member
  • Posts: 567
Reply 2 on: Jul 27, 2018
Excellent

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

The human body produces and destroys 15 million blood cells every second.

The "Emu in the sky," a constellation defined by dark clouds rather than the stars. The "Emu in the sky," a constellation defined by dark clouds rather than the stars.
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri. The two bright stars are (left) Alpha Centauri and (right) Beta Centauri.
False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
Balmer Lines in the Spectrum of a Star Balmer Lines in the Spectrum of a Star
Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
Amount of Energy Released by Earthquakes of Different Magnitudes Amount of Energy Released by Earthquakes of Different Magnitudes
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library