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Science chap 11 + 12
chap. 11 sec. 4, chap. 12 sec. 1+2
Question | Answer |
---|---|
Bernoulli's principle | rule that states that a stream of fast-moving fluid exerts less pressure than the surrounding fluid |
work | when you exert a force on the object that causes the object to move some distance |
joule | unit of work equal to one newton-meter |
efficiency | output work/ iput work x 100% |
mechanical advatage = | output force/ input force |
work = | force x distance |
machine | device that changes the amount of force exerted or the direction in which force is exerted |
input force | force exerted on a machine |
output force | force exerted on an object by a machine |
ideal mechanical advantage | mechanical advantage that a machine would have without friction |
actual mechanical advantage | mechanical advatage that a machine provides in a real situation |