Author Question: A spacecraft has captured and brought material to Earth from a comet. Indicate whether the ... (Read 50 times)

shofmannx20

  • Hero Member
  • *****
  • Posts: 562
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
Answer to Question 1

TRUE

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

For a complete list of videos, visit our video library