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A wind turbine converts some of the kinetic energy of the wind into electric energy. Suppose that the blades of a small wind turbine have length L = 3.7 m.a) When a 11 m/s (24.607 mi/h) wind blows head-on, what volume of air (in m3) passes through the circular area swept out by the blades in 1.0 s?b) What is the translational kinetic energy of this mass of air?c) If the turbine can convert 43% of this kinetic energy into electric energy, what is its electric power output?d) What happens to the power output if the wind speed decreases to 1/2 of its initial value?
Determine Maximum wavelength and Minimum wavelength. How various penguins of mass 16 kg each can stand on the ice block before they find their feet wet.
Mitch is driving the Batmobile (which he stole). He is driving at a constant velocity of 40 m/s. What is the acceleration of the Batmobile
A concave spherical mirror with a focal length of 15cm forms an upright image that is 5 times larger than the original object
An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction
An LC circuit consists of a capacitor, C = 3.52 µF, and an inductor, L = 4.22 mH. The capacitor is fully charged using a battery and then connected to the inductor. Determine the resistance of the resistor
A balloon carrying a basket is descending at a constant velocity of 20.0m/s. At the instant the rock hits the ground, how far is it from the basket
You drop a 14g ball from a height of 1.5 m and it only bounces back a height of 0.85m. What is the total impulse on the ball when it hit the floor
A Styrofoam cup holding 135 g of hot water at 93°C cools to room temperature, 22.0°C. What is the change in entropy of the room
Charges of -q and +2q are fixed in place, with a distance of 2.00mbetween them. A dashed line is drawn through the negative charge,perpendicular to the line between the charges. On the dashed line,at a distance L from the negative charge, there is..
A record turntable rotates through 5.0 rad in 2.8 s as it is accelerated uniformly from rest. What is the angular velocity at the end of that time
A rocket of total mass 3160 kg is traveling in outer space with a velocity of 120 m/s. To alter its course by 38.5 degrees, its rockets can be fired briefly in a direction perpendicular to its original motion. how much mass must be expelled
Two microscope slides are stuck together and touching on one side where n=1.2 and wedged open on the other where n=1.5. These slides sit in air. How many fringes are there for the same slide configuration when it sits in water rather than air
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