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The power of a machine measures
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
A device that changes the size or direction of force used to do work is called a(an) _______
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
The bottle opener is what type of a lever?
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
A 100 m long ski lift carries skiers from a station at the foot of a slope to a second station 40 m above. What is the IMA of the lift?
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
In which of the following is no work done?
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
The force that is exerted on a machine is called the __________ force.
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _______ the work input
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
2 or more simple machines working together to make up a(an) ______ machine
increase
none of the above
compound
Class 1
input
its rate of doing work
machine
2.5
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