« previous next »

Author Question: A star more massive than the Sun will have A) an identical lifetime as the Sun because although ... (Read 80 times)

mmm

  • Hero Member
  • *****
  • Posts: 558
on: Jul 27, 2018
A star more massive than the Sun will have
 
  A) an identical lifetime as the Sun because although its overall mass is higher, the mass of its nuclear burning core is the same
  B) a longer lifetime because it has more fuel to burn
  C) a shorter lifetime because although its overall mass is higher, the mass of its nuclear burning core is smaller
  D) a shorter lifetime because its central core is hotter and denser

Question 2

Why do the oldest stars we observe contain almost nothing but hydrogen and helium?
 
  What will be an ideal response?


tofugiraffe

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

This first generation of stars must be made of the elements produced in primordial nucleosynthesis, which had time only to turn 25 of the hydrogen into helium.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Betelgeuse star (Hubble) Betelgeuse star (Hubble)
A Summary of the Star Formation Process A Summary of the Star Formation Process
Fully Convective Star Fully Convective Star
A Mass-Loss Star A Mass-Loss Star
Identical Twin Identical Twin
Cut the figure into two identical parts Cut the figure into two identical parts
Video: Wound Care

For a complete list of videos, visit our video library