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

Author Question: Stars nearby to our sun have an average relative speed of about 70,000 km/hour. How fast is that in ... (Read 44 times)

Metfan725

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
Stars nearby to our sun have an average relative speed of about 70,000 km/hour. How fast is that in km/s?
 
  A) about 3000 km/s B) about 20 km/s
  C) about 1200 km/s D) about 4.2 million km/s

Question 2

What eventually halts the gravitational collapse of an interstellar gas cloud that forms an object that is not massive enough to become a star?
 
  A) Nothing; all collapsing gas clouds become black holes.
  B) the crowding of electrons in the core
  C) A critical fraction of the gas has been driven further into space.
  D) the central object becoming hot enough to sustain nuclear fusion in its core


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

B


Metfan725

  • Member
  • Posts: 552
Reply 2 on: Jul 27, 2018
Gracias!

cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their le Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their le
All objects in the image are distant galaxies – not stars All objects in the image are distant galaxies – not stars
The average weight gain between Thanksgiving and New Year's Day is about a pound The average weight gain between Thanksgiving and New Year's Day is about a pound
Average Distribution of Incoming Solar Radiation Average Distribution of Incoming Solar Radiation
At what speed does Grogzetti need to take the curve to avoid sliding? At what speed does Grogzetti need to take the curve to avoid sliding?
Escape Speed Problem Escape Speed Problem
Video: Basic rhythm - control centers in medulla oblongata, spirograph and normal tidal cycle

For a complete list of videos, visit our video library