Top Posters
Since Sunday
y
2
s
2
a
1
w
1
w
1
i
1
m
1
s
1
c
1
k
1
1
m
1
Home Q & A Board Science-Related Homework Help Physics
New Topic  
einsteindude einsteindude
wrote...
Go to Answer
Posts: 5058
Rep: 29 1
9 years ago
Which of the following is the main reason for the fact that hydroelectric power plants are far more efficient than coal-fired electric power plants?       

A) Coal is only partially combustible, due to the presence of large amounts of impurities.
B) Since the hydroelectric plant is not a heat engine, it is not restricted by the second law of thermodynamics.
C) Hydroelectric plants have far fewer moving parts.
D) The law of conservation of energy tells us that heat engines, such as hydroelectric plants, are more efficient than other forms of energy conversion.
E) Actually, hydroelectric plants are not significantly more efficient than coal-fired plants.
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
Read 270 times
1 Reply
Replies
Answer accepted by topic starter
mel!811mel!811
wrote...
#1
Top Poster
Posts: 2794
Rep: 389 0
9 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1149 People Browsing
 184 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 1502
  
 2099
  
 360
Your Opinion
Which of the following is the best resource to supplement your studies:
Votes: 300
Previous poll results: Who will win the 2024 president election?