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

Author Question: About what percentage of molecules in the air make up the atmosphere below a 6-kilometer altitude? ... (Read 36 times)

lbcchick

  • Hero Member
  • *****
  • Posts: 550
on: Jul 29, 2018
About what percentage of molecules in the air make up the atmosphere below a 6-kilometer altitude?
 
  A) 20
  B) 30
  C) 40
  D) 50
  E) more than 50

Question 2

A block of wood with a piece of iron tied to the top of it floats in a bucket of water. If the wood and iron are turned over so that the iron is submerged beneath the wood, the water level at the side of the bucket
 
  A) rises.
  B) falls.
  C) remains the same.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

zenzy

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: E

Answer to Question 2

Answer: C


lbcchick

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


zenzy

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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.

Bartel and Szostak demonstrated chemical selection for RNA molecules that can catalyze phosphoester Bartel and Szostak demonstrated chemical selection for RNA molecules that can catalyze phosphoester
Close-ups of Jupiter’s Atmosphere Close-ups of Jupiter’s Atmosphere
Non-Carbon Organic Molecules Non-Carbon Organic Molecules
The Atmosphere’s Oxygen Came from PhotosyntheticOrganisms The Atmosphere’s Oxygen Came from PhotosyntheticOrganisms
Percentage of youth age 15 to 19 years with at-risk levels of body composition & fitness Percentage of youth age 15 to 19 years with at-risk levels of body composition & fitness
Barry Bonds hits a 125m (450') home run that lands in the stands at an altitude 30m above its ... Barry Bonds hits a 125m (450') home run that lands in the stands at an altitude 30m above its ...
Video: Acid-base imbalances - respiratory acidosis and alkalosis

For a complete list of videos, visit our video library