[Answered] If you put 100 watts of power into a machine that produces 75 watts of power, the efficiency of the ...

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oliviahorn72

Hero Member
Posts: 579

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

Sr. Member
Posts: 353

Reply #1 on: Jul 21, 2018

Answer to Question 1

C

Answer to Question 2

A

oliviahorn72

Member
Posts: 579

Reply 2 on: Jul 21, 2018

YES! Correct, THANKS for helping me on my review

isabelt_18

Member
Posts: 342

Reply 3 on: Yesterday

TYSM

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