× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
k
3
r
3
j
3
V
3
l
3
J
2
1
2
n
2
O
2
h
2
d
2
s
2
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
EmpressDina EmpressDina
wrote...
Go to Answer
Posts: 470
Rep: 0 0
6 years ago
When the Sun runs out of nuclear fuel and expands to become a red giant,
 
  A) the Earth's oceans will freeze solid
  B) the Earth will be ejected from the solar system
  C) the Earth will be destroyed
  D) the Earth will experience a runaway greenhouse effect followed by the total loss of its atmosphere

Question 2

The electric field at the surface of a conductor is
 
  A) always zero.
  B) perpendicular to the surface.
  C) parallel to the surface.
  D) never zero.

Question 3

Capacitance of capacitors depends upon
 
  A) the material between the conductors.
  B) the geometry of the conductors.
  C) the space between the conductors.
  D) all of these answers.
  E) none of these answers.

Question 4

Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen, compared to hydrogen,
 
  A) is greater.
  B) is less.
  C) is the same.
  D) cannot be determined since pressure and volume are not given.

Question 5

Thermal efficiency (non-Carnot) is
 
  A) Q/T.
  B) Q/m.
  C) 1  Qcold/Qhot.
  D) Q - W.
  E) 1 - Tcold/Thot.
Read 39 times
1 Reply
Replies
Answer verified by a subject expert
EEEEEricaEEEEErica
wrote...
#1
Posts: 325
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

EmpressDina Author
wrote...

6 years ago
this is exactly what I needed
bioc
wrote...

Yesterday
Just got PERFECT on my quiz
larrybrads
wrote...

2 hours ago
Brilliant ツ
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1027 People Browsing
 125 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 755
  
 295
  
 310
Your Opinion
Which is the best fuel for late night cramming?
Votes: 146
Previous poll results: Do you trust social media networks with protecting your privacy?