This topic contains a solution. Click here to go to the answer

Author Question: Earth's greenhouse effect problem is important because A) it is a result of our use of nuclear ... (Read 39 times)

EAugust

  • Hero Member
  • *****
  • Posts: 550
Earth's greenhouse effect problem is important because
 
  A) it is a result of our use of nuclear energy, one of our prime sources of energy.
  B) it could cause increased skin cancer.
  C) it might warm up our entire planet.
  D) we must breath CO2 in order to live.
  E) CO2 is a toxic pollutant.

Question 2

Astronauts, in satellites orbiting Earth, feel weightless. Are they really weightless?
 
  A) Yes, because the centrifugal force due to their circular motion balances the force of gravity.
  B) Yes, because they are not in Earth's gravitational field.
  C) Yes, because they are falling around Earth.
  D) No, because the gravitational force is pulling downward on them.
  E) No, because the centrifugal force is pulling outward on them.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

qytan

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

C

Answer to Question 2

D




EAugust

  • Member
  • Posts: 550
Reply 2 on: Jul 29, 2018
Excellent


komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

For a complete list of videos, visit our video library