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

Author Question: How many moons is Pluto known to have? A) none B) three C) one D) four E) ... (Read 38 times)

shenderson6

  • Hero Member
  • *****
  • Posts: 573
on: Jul 27, 2018
How many moons is Pluto known to have?
 
  A) none B) three C) one D) four E) two

Question 2

Why does conversion of its core to iron have to mark the end of a star's life? Which stars can end up with iron cores?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

phuda

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

Stars with a total mass of 8 solar masses or more may form iron cores. The formation of an iron core ends the normal life of a star because iron cannot be fused into heavier elements and produce energy, as previous fusion reactions have done. In order to fuse iron, energy must be provided. The star, at this point in its evolution, has finally run out of energy sources in its core. This disrupts the hydrostatic equilibrium of the star; the inward pressure of gravity takes over and the star collapses and then explodes as a Type II supernova.


shenderson6

  • Member
  • Posts: 573
Reply 2 on: Jul 27, 2018
Wow, this really help

cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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.

Major moons of Uranus in order of increasing distance (left to right), at their proper relative size Major moons of Uranus in order of increasing distance (left to right), at their proper relative size
Artist's conception of the New Horizons spacecraft passing over Pluto, showing its tenuous atmo Artist's conception of the New Horizons spacecraft passing over Pluto, showing its tenuous atmo
Jupiter and Its Largest Moons Jupiter and Its Largest Moons
Saturn’s Diverse Moons Saturn’s Diverse Moons
Saturn’s Diverse Moons Saturn’s Diverse Moons
Pluto’s Moons Nix and Hydra Pluto’s Moons Nix and Hydra
Video: Humerus Adduction Animation

For a complete list of videos, visit our video library