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Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be quite high-many times higher than the wind speed. a turbine has blades 59m long that spin at13rpm .
at the tip of a blade, what is the speed?
at the tip of a blade, what is the centripetal acceleration?
a big dog has a torso that is approximately circular, with a radius of 16cm . at the midpoint of a shake, the dog's fur is moving at a remarkable 2.5m/s .
what force is required to keep a 10 mg water droplet moving in this circular arc?
what is the ratio of this force to the weight of a droplet?
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Physics, 22.06.2019 05:30, dashawn3rd55
Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.
Answers: 1
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Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the spee...
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