Assertion: friction | /r/CapableOf | reduce the efficiency of machines
Facets:
value: inevitably
type: DEGREE
Source sentences:
text: At the heart of this relationship is a paradox, however, because friction inevitably reduces the efficiency of machines: a car, as noted earlier, exerts fully one-quarter of its power simply on overcoming the force of friction both within its engine and from air resistance as it travels down the road.