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OpenStudy (anonymous):
You have measured the mechanical advantage of a device to be two, and the speed ratio to be seven, what is the efficiency? Select one: a. 3.5 b. 3.5% c. 28.6 d. 28.6%
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OpenStudy (ashsmashum1290):
B
OpenStudy (ashsmashum1290):
can i plz have a medal
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
but are you sure it is B?
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