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Author Question: The simple machine that helps to reduce friction is the _______________. Fill in the blank(s) ... (Read 21 times)

jasdeep_brar

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on: Jul 21, 2018
The simple machine that helps to reduce friction is the _______________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

The internal combustion engine used in most cars has an average efficiency of about _______________ percent.
 
 


 
  Fill in the blank(s) with the appropriate word(s).


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Fayaz00962

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Reply #1 on: Jul 21, 2018
Answer to Question 1

wheel and axle

Answer to Question 2

twenty


jasdeep_brar

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Reply 2 on: Jul 21, 2018
Excellent

bitingbit

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Reply 3 on: Yesterday
Wow, this really help

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