Top Posters
Since Sunday
12
s
5
t
5
s
5
9
5
g
5
h
5
l
5
o
5
f
5
d
5
r
4
Home Q & A Board Science-Related Homework Help Physics
New Topic  
einsteindude einsteindude
wrote...
Go to Answer
Posts: 5058
Rep: 29 1
8 years ago
What is the work output of a heat engine whose thermal energy input is 400 J and whose exhaust is 300 J?       
A) 400 J       B) 700 J       C) 100 J       D) 300 J       E) 200 J
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
Authors:
Read 400 times
1 Reply
Replies
Answer accepted by topic starter
mel!811mel!811
wrote...
#1
Top Poster
Posts: 2792
Rep: 389 0
8 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
C

Efficiency = output/input × 100% =

( 400-300)/400 *100% =

=25% of 400 is 100J
1

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  261 People Browsing
 204 Signed Up Today
Start New Topic Take the Tour Study Tips Study ToolsNew Topics Trending Browse by Textbook
Related Images
  
 5571
  
 503
  
 209
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 327
Previous poll results: Who's your favorite biologist?