Question and answer
For many years inventors tried to develop a perpetual motion machine, one that would continue moving forever once it was set in motion. They were never successful because A. all machines are closed
systems. B. they could never make a perfectly silent machine. C. friction between moving parts would transform the kinetic energy to heat. D. kinetic energy would be transformed to potential energy in such a machine.
C. friction between moving parts would transform the kinetic energy to heat.
Expert answered|KennLJ|Points 192|
Question
Asked 7/26/2011 12:32:56 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
What is the molar mass for the following compound? Na2S2O3 A. 71 g B. 153 g C. 158 g D. 254 g
Weegy: C. 158 g (More)
Question
Expert Answered
Asked 7/22/2011 10:54:15 AM
0 Answers/Comments
What is the molar mass of CaSO4? A. 68 g B. 112 g C. 136 g D. 352 g
Weegy: C. 136 g. Thanks for using Weegy! (More)
Question
Expert Answered
Asked 7/22/2011 11:01:03 AM
0 Answers/Comments
What is the molar mass of CaSO4? A. 68 g B. 112 g C. 136 g D. 352 g
Weegy: Hello Sir it's may be A. 68 g (More)
Question
Expert Answered
Updated 7/22/2011 11:10:43 AM
1 Answer/Comment
The molar mass of CaSO4 is 136 g.
Added 7/22/2011 11:10:43 AM
What is the molar mass for the following compound? Na2S2O3 A. 71 g B. 153 g C. 158 g D. 254 g
Weegy: C. 158 g (More)
Question
Expert Answered
Asked 7/22/2011 10:54:08 AM
0 Answers/Comments
2H2 + O2à 2H2O How many water molecules are created when 32 grams of oxygen react completely with 4 grams of hydrogen? A. 2 B. 20 C. 6.02 × 1023 D. 1.2 × 1024
Weegy: C) User: thank you (More)
Question
Expert Answered
Updated 10/5/2012 5:30:34 AM
1 Answer/Comment
Please refer to Weegy's basic rules under the Resource tab. Please provide a complete answer and not just a letter.
Added 10/5/2012 5:30:34 AM
17,604,795 questions answered
Popular Conversations
A list of potential sources of information for a paper is a(n) ...
Weegy: A list of potential sources of information for a paper in annotated bibliography. User: An index to ...
9/29/2014 2:50:04 PM| 4 Answers
You've settled on an idea for an essay to write. What should you do ...
Weegy: D.) Conduct interviews, do some research, ask questions, and make a plan. User: To make sure your reader ...
9/29/2014 5:55:28 PM| 4 Answers
What is the square root of 6000?
9/29/2014 2:39:45 PM| 3 Answers
Because the subject of a composition is like a crystal with many ...
Weegy: Because the subject of a composition is like a crystal with many facets, you should A. offer your reader ideas ...
9/29/2014 7:06:34 PM| 3 Answers
The densest ocean water is generally found a. in the surface ...
Weegy: A. in the surface zone User: In which zone is ocean temperature most affected by the weather? a. transition ...
9/30/2014 6:07:25 AM| 3 Answers
The pressure of ocean water increases as depth increases. User: The ...
Weegy: It originates in the Gulf of Mexico and, as the Florida Current, passes through the Straits of Florida and then ...
9/30/2014 6:27:02 AM| 3 Answers
In the Roman Republic, ____________ did not have power in the ...
Weegy: In the Roman Republic,non-citizens did not have power in the government.
9/29/2014 5:48:03 AM| 2 Answers
Weegy Stuff
S
R
L
1
1
P
C
1
P
1
1
L
P
C
P
C
1
P
C
L
P
C
1
P
C
P
C
P
C
L
Points 3316 [Total 27714]| Ratings 8| Comments 3236| Invitations 0|Offline
S
L
1
L
P
C
1
Points 2951 [Total 9482]| Ratings 12| Comments 2831| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
P
C
Points 2829 [Total 20001]| Ratings 12| Comments 2709| Invitations 0|Offline
S
L
C
P
C
1
L
L
P
C
1
Points 2761 [Total 18700]| Ratings 19| Comments 2571| Invitations 0|Offline
S
L
1
1
1
1
L
1
L
Points 2595 [Total 12375]| Ratings 0| Comments 2595| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 983 [Total 12229]| Ratings 0| Comments 983| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
P
C
Points 864 [Total 19395]| Ratings 2| Comments 844| Invitations 0|Offline
S
L
Points 733 [Total 1402]| Ratings 0| Comments 733| Invitations 0|Offline
S
1
L
L
Points 671 [Total 5794]| Ratings 5| Comments 621| Invitations 0|Online
S
P
C
L
P
L
1
Points 177 [Total 6234]| Ratings 2| Comments 157| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.