Author Question: Why does Mars appear fainter than Venus, as seen from Earth? A) because of its red color B) ... (Read 27 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
Why does Mars appear fainter than Venus, as seen from Earth?
 
  A) because of its red color
  B) because its two moons block the light from getting to Earth
  C) because it is often eclipsed by Jupiter
  D) because it is smaller, farther away and less reflective
  E) because it doesn't have water on its surface

Question 2

The energy required to move an electron in a hydrogen atom from energy level 2 to energy level 3 is:
 
  A) 0.7 eV.
  B) 1.9 eV.
  C) 2.6 eV.
  D) 2.9 eV.
  E) 3.4 eV.



parshano

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

D

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

parshano

  • Sr. Member
  • ****
  • Posts: 333

 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

For a complete list of videos, visit our video library