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Author Question: If you put 100 watts of power into a machine that produces 75 watts of power, the efficiency of the ... (Read 188 times)

oliviahorn72

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on: Jul 21, 2018
If you put 100 watts of power into a machine that produces 75 watts of power, the efficiency of the machine is ____ percent.
 
 

a. 25 c. 75
  b. 50 d. 125



Question 2

Which item performs work using a wheel and pulley system?
 
 

a. elevator c. train
  b. ramp d. inclined plane



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fauacakatahaias

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

C

Answer to Question 2

A


oliviahorn72

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Reply 2 on: Jul 21, 2018
Gracias!

ktidd

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Reply 3 on: Yesterday
Wow, this really help

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