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The efficiency of a machine is always less than 100 percent because (1 point) a machine cannot have an IMA (ideal mechanical advantage) greater than 1. some work input is lost to friction. the work input is too small. the work output is too great.
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The efficiency of a machine is always less than 100 percent because: some work input is lost to friction.
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Asked 2/15/2013 2:43:18 PM
Updated 1/19/2015 1:51:39 PM
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The efficiency of a machine is always less than 100 percent because: some work input is lost to friction.


Added 1/19/2015 1:51:39 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [1/19/2015 1:53:39 PM]
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Questions asked by the same visitor
A force acting on an object does no work if (1 point) a machine is used to move the object. the force is not in the direction of the object’s motion. the force is greater than the friction of motion. the object accelerates.
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Updated 5/6/2016 3:04:23 PM
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A force acting on an object does no work if the force is not in the direction of the object’s motion.

Added 5/6/2016 3:04:23 PM
This answer has been confirmed as correct and helpful.
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