« previous next »

Author Question: A spacecraft has captured and brought material to Earth from a comet. Indicate whether the ... (Read 22 times)

shofmannx20

  • Hero Member
  • *****
  • Posts: 562
on: Jul 27, 2018
A spacecraft has captured and brought material to Earth from a comet.
 
  Indicate whether the statement is true or false

Question 2

If a star was the same size as our Sun, but was 81 times more luminous, it must be
 
  A) twice as hot as our Sun.
  B) three times hotter than the Sun.
  C) four times hotter than the Sun.
  D) nine times hotter than the Sun.
  E) 81 times hotter than the Sun.


TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

The Sun as it appears from the surface of Earth during the middle of the day The Sun as it appears from the surface of Earth during the middle of the day
Comet Wild 2 Comet Wild 2
Benvenuto Cellini, Saltcellar: Neptune (Sea) and Tellus (Earth). Benvenuto Cellini, Saltcellar: Neptune (Sea) and Tellus (Earth).
Ocean cover most of Earth’s surface Ocean cover most of Earth’s surface
Gravity on Earth Vs. Gravity in Bed Gravity on Earth Vs. Gravity in Bed
Earth-Moon-Sun Positions during the Spring Tide Earth-Moon-Sun Positions during the Spring Tide
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library