SOLUTION: To approximate speed of river, a circular paddle wheel with radius 0.55 feet is the a lowered into the water. If the current causes the wheel to rotate at a speed of 9 revolution

Algebra ->  Trigonometry-basics -> SOLUTION: To approximate speed of river, a circular paddle wheel with radius 0.55 feet is the a lowered into the water. If the current causes the wheel to rotate at a speed of 9 revolution      Log On


   

Question 884461: To approximate speed of river, a circular paddle wheel with radius 0.55 feet is the a lowered into the water. If the current causes the wheel to rotate at a speed of 9 revolutions per minute, what is speed of the current? Express the answer in miles per hour the rounded to two decimal places, if necessary.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
To approximate speed of river, a circular paddle wheel with radius 0.55 feet is the a lowered into the water. If the current causes the wheel to rotate at a speed of 9 revolutions per minute, what is speed of the current? Express the answer in miles per hour the rounded to two decimal places, if necessary.
***
convert angular speed to linear speed
9%28rev%2Fmin%2960%28min%2Fhr%292pi%2A0.55%28ft%2Frev%29%28mile%2F5280+ft%29
cancel out rev, min, ft, leaving miles/hr

speed of the current=0.35 mph